The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/Documentation/devices.txt

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    1 
    2                     LINUX ALLOCATED DEVICES (2.6+ version)
    3 
    4              Maintained by Alan Cox <device@lanana.org>
    5 
    6                       Last revised: 6th April 2009
    7 
    8 This list is the Linux Device List, the official registry of allocated
    9 device numbers and /dev directory nodes for the Linux operating
   10 system.
   11 
   12 The latest version of this list is available from
   13 http://www.lanana.org/docs/device-list/ or
   14 ftp://ftp.kernel.org/pub/linux/docs/device-list/.  This version may be
   15 newer than the one distributed with the Linux kernel.
   16 
   17 The LaTeX version of this document is no longer maintained.
   18 
   19 This document is included by reference into the Filesystem Hierarchy
   20 Standard (FHS).  The FHS is available from http://www.pathname.com/fhs/.
   21 
   22 Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
   23 platform only.  Allocations marked (68k/Atari) apply to Linux/68k on
   24 the Atari platform only.
   25 
   26 The symbol {2.6} means the allocation is obsolete and scheduled for
   27 removal once kernel version 2.6 (or equivalent) is released. Some of these
   28 allocations have already been removed.
   29 
   30 This document is in the public domain.  The author requests, however,
   31 that semantically altered versions are not distributed without
   32 permission of the author, assuming the author can be contacted without
   33 an unreasonable effort.
   34 
   35 In particular, please don't sent patches for this list to Linus, at
   36 least not without contacting me first.
   37 
   38 I do not have any information about these devices beyond what appears
   39 on this list.  Any such information requests will be deleted without
   40 reply.
   41 
   42 
   43           **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
   44 
   45 To have a major number allocated, or a minor number in situations
   46 where that applies (e.g. busmice), please contact me with the
   47 appropriate device information.  Also, if you have additional
   48 information regarding any of the devices listed below, or if I have
   49 made a mistake, I would greatly appreciate a note.
   50 
   51 I do, however, make a few requests about the nature of your report.
   52 This is necessary for me to be able to keep this list up to date and
   53 correct in a timely manner.  First of all, *please* send it to the
   54 correct address... <device@lanana.org>.  I receive hundreds of email
   55 messages a day, so mail sent to other addresses may very well get lost
   56 in the avalanche.  Please put in a descriptive subject, so I can find
   57 your mail again should I need to.  Too many people send me email
   58 saying just "device number request" in the subject.
   59 
   60 Second, please include a description of the device *in the same format
   61 as this list*.  The reason for this is that it is the only way I have
   62 found to ensure I have all the requisite information to publish your
   63 device and avoid conflicts.
   64 
   65 Third, please don't assume that the distributed version of the list is
   66 up to date.  Due to the number of registrations I have to maintain it
   67 in "batch mode", so there is likely additional registrations that
   68 haven't been listed yet.
   69 
   70 Fourth, remember that Linux now has extensive support for dynamic allocation
   71 of device numbering and can use sysfs and udev to handle the naming needs.
   72 There are still some exceptions in the serial and boot device area. Before
   73 asking for a device number make sure you actually need one.
   74 
   75 Finally, sometimes I have to play "namespace police."  Please don't be
   76 offended.  I often get submissions for /dev names that would be bound
   77 to cause conflicts down the road.  I am trying to avoid getting in a
   78 situation where we would have to suffer an incompatible forward
   79 change.  Therefore, please consult with me *before* you make your
   80 device names and numbers in any way public, at least to the point
   81 where it would be at all difficult to get them changed.
   82 
   83 Your cooperation is appreciated.
   84 
   85 
   86   0             Unnamed devices (e.g. non-device mounts)
   87                   0 = reserved as null device number
   88                 See block major 144, 145, 146 for expansion areas.
   89 
   90   1 char        Memory devices
   91                   1 = /dev/mem          Physical memory access
   92                   2 = /dev/kmem         Kernel virtual memory access
   93                   3 = /dev/null         Null device
   94                   4 = /dev/port         I/O port access
   95                   5 = /dev/zero         Null byte source
   96                   6 = /dev/core         OBSOLETE - replaced by /proc/kcore
   97                   7 = /dev/full         Returns ENOSPC on write
   98                   8 = /dev/random       Nondeterministic random number gen.
   99                   9 = /dev/urandom      Faster, less secure random number gen.
  100                  10 = /dev/aio          Asynchronous I/O notification interface
  101                  11 = /dev/kmsg         Writes to this come out as printk's, reads
  102                                         export the buffered printk records.
  103                  12 = /dev/oldmem       Used by crashdump kernels to access
  104                                         the memory of the kernel that crashed.
  105 
  106   1 block       RAM disk
  107                   0 = /dev/ram0         First RAM disk
  108                   1 = /dev/ram1         Second RAM disk
  109                     ...
  110                 250 = /dev/initrd       Initial RAM disk
  111 
  112                 Older kernels had /dev/ramdisk (1, 1) here.
  113                 /dev/initrd refers to a RAM disk which was preloaded
  114                 by the boot loader; newer kernels use /dev/ram0 for
  115                 the initrd.
  116 
  117   2 char        Pseudo-TTY masters
  118                   0 = /dev/ptyp0        First PTY master
  119                   1 = /dev/ptyp1        Second PTY master
  120                     ...
  121                 255 = /dev/ptyef        256th PTY master
  122 
  123                 Pseudo-tty's are named as follows:
  124                 * Masters are "pty", slaves are "tty";
  125                 * the fourth letter is one of pqrstuvwxyzabcde indicating
  126                   the 1st through 16th series of 16 pseudo-ttys each, and
  127                 * the fifth letter is one of 0123456789abcdef indicating
  128                   the position within the series.
  129 
  130                 These are the old-style (BSD) PTY devices; Unix98
  131                 devices are on major 128 and above and use the PTY
  132                 master multiplex (/dev/ptmx) to acquire a PTY on
  133                 demand.
  134 
  135   2 block       Floppy disks
  136                   0 = /dev/fd0          Controller 0, drive 0, autodetect
  137                   1 = /dev/fd1          Controller 0, drive 1, autodetect
  138                   2 = /dev/fd2          Controller 0, drive 2, autodetect
  139                   3 = /dev/fd3          Controller 0, drive 3, autodetect
  140                 128 = /dev/fd4          Controller 1, drive 0, autodetect
  141                 129 = /dev/fd5          Controller 1, drive 1, autodetect
  142                 130 = /dev/fd6          Controller 1, drive 2, autodetect
  143                 131 = /dev/fd7          Controller 1, drive 3, autodetect
  144 
  145                 To specify format, add to the autodetect device number:
  146                   0 = /dev/fd?          Autodetect format
  147                   4 = /dev/fd?d360      5.25"  360K in a 360K  drive(1)
  148                  20 = /dev/fd?h360      5.25"  360K in a 1200K drive(1)
  149                  48 = /dev/fd?h410      5.25"  410K in a 1200K drive
  150                  64 = /dev/fd?h420      5.25"  420K in a 1200K drive
  151                  24 = /dev/fd?h720      5.25"  720K in a 1200K drive
  152                  80 = /dev/fd?h880      5.25"  880K in a 1200K drive(1)
  153                   8 = /dev/fd?h1200     5.25" 1200K in a 1200K drive(1)
  154                  40 = /dev/fd?h1440     5.25" 1440K in a 1200K drive(1)
  155                  56 = /dev/fd?h1476     5.25" 1476K in a 1200K drive
  156                  72 = /dev/fd?h1494     5.25" 1494K in a 1200K drive
  157                  92 = /dev/fd?h1600     5.25" 1600K in a 1200K drive(1)
  158 
  159                  12 = /dev/fd?u360      3.5"   360K Double Density(2)
  160                  16 = /dev/fd?u720      3.5"   720K Double Density(1)
  161                 120 = /dev/fd?u800      3.5"   800K Double Density(2)
  162                  52 = /dev/fd?u820      3.5"   820K Double Density
  163                  68 = /dev/fd?u830      3.5"   830K Double Density
  164                  84 = /dev/fd?u1040     3.5"  1040K Double Density(1)
  165                  88 = /dev/fd?u1120     3.5"  1120K Double Density(1)
  166                  28 = /dev/fd?u1440     3.5"  1440K High Density(1)
  167                 124 = /dev/fd?u1600     3.5"  1600K High Density(1)
  168                  44 = /dev/fd?u1680     3.5"  1680K High Density(3)
  169                  60 = /dev/fd?u1722     3.5"  1722K High Density
  170                  76 = /dev/fd?u1743     3.5"  1743K High Density
  171                  96 = /dev/fd?u1760     3.5"  1760K High Density
  172                 116 = /dev/fd?u1840     3.5"  1840K High Density(3)
  173                 100 = /dev/fd?u1920     3.5"  1920K High Density(1)
  174                  32 = /dev/fd?u2880     3.5"  2880K Extra Density(1)
  175                 104 = /dev/fd?u3200     3.5"  3200K Extra Density
  176                 108 = /dev/fd?u3520     3.5"  3520K Extra Density
  177                 112 = /dev/fd?u3840     3.5"  3840K Extra Density(1)
  178 
  179                  36 = /dev/fd?CompaQ    Compaq 2880K drive; obsolete?
  180 
  181                 (1) Autodetectable format
  182                 (2) Autodetectable format in a Double Density (720K) drive only
  183                 (3) Autodetectable format in a High Density (1440K) drive only
  184 
  185                 NOTE: The letter in the device name (d, q, h or u)
  186                 signifies the type of drive: 5.25" Double Density (d),
  187                 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
  188                 (any model, u).  The use of the capital letters D, H
  189                 and E for the 3.5" models have been deprecated, since
  190                 the drive type is insignificant for these devices.
  191 
  192   3 char        Pseudo-TTY slaves
  193                   0 = /dev/ttyp0        First PTY slave
  194                   1 = /dev/ttyp1        Second PTY slave
  195                     ...
  196                 255 = /dev/ttyef        256th PTY slave
  197 
  198                 These are the old-style (BSD) PTY devices; Unix98
  199                 devices are on major 136 and above.
  200 
  201   3 block       First MFM, RLL and IDE hard disk/CD-ROM interface
  202                   0 = /dev/hda          Master: whole disk (or CD-ROM)
  203                  64 = /dev/hdb          Slave: whole disk (or CD-ROM)
  204 
  205                 For partitions, add to the whole disk device number:
  206                   0 = /dev/hd?          Whole disk
  207                   1 = /dev/hd?1         First partition
  208                   2 = /dev/hd?2         Second partition
  209                     ...
  210                  63 = /dev/hd?63        63rd partition
  211 
  212                 For Linux/i386, partitions 1-4 are the primary
  213                 partitions, and 5 and above are logical partitions.
  214                 Other versions of Linux use partitioning schemes
  215                 appropriate to their respective architectures.
  216 
  217   4 char        TTY devices
  218                   0 = /dev/tty0         Current virtual console
  219 
  220                   1 = /dev/tty1         First virtual console
  221                     ...
  222                  63 = /dev/tty63        63rd virtual console
  223                  64 = /dev/ttyS0        First UART serial port
  224                     ...
  225                 255 = /dev/ttyS191      192nd UART serial port
  226 
  227                 UART serial ports refer to 8250/16450/16550 series devices.
  228 
  229                 Older versions of the Linux kernel used this major
  230                 number for BSD PTY devices.  As of Linux 2.1.115, this
  231                 is no longer supported.  Use major numbers 2 and 3.
  232 
  233   4 block       Aliases for dynamically allocated major devices to be used
  234                 when its not possible to create the real device nodes
  235                 because the root filesystem is mounted read-only.
  236 
  237                   0 = /dev/root
  238 
  239   5 char        Alternate TTY devices
  240                   0 = /dev/tty          Current TTY device
  241                   1 = /dev/console      System console
  242                   2 = /dev/ptmx         PTY master multiplex
  243                   3 = /dev/ttyprintk    User messages via printk TTY device
  244                  64 = /dev/cua0         Callout device for ttyS0
  245                     ...
  246                 255 = /dev/cua191       Callout device for ttyS191
  247 
  248                 (5,1) is /dev/console starting with Linux 2.1.71.  See
  249                 the section on terminal devices for more information
  250                 on /dev/console.
  251 
  252   6 char        Parallel printer devices
  253                   0 = /dev/lp0          Parallel printer on parport0
  254                   1 = /dev/lp1          Parallel printer on parport1
  255                     ...
  256 
  257                 Current Linux kernels no longer have a fixed mapping
  258                 between parallel ports and I/O addresses.  Instead,
  259                 they are redirected through the parport multiplex layer.
  260 
  261   7 char        Virtual console capture devices
  262                   0 = /dev/vcs          Current vc text contents
  263                   1 = /dev/vcs1         tty1 text contents
  264                     ...
  265                  63 = /dev/vcs63        tty63 text contents
  266                 128 = /dev/vcsa         Current vc text/attribute contents
  267                 129 = /dev/vcsa1        tty1 text/attribute contents
  268                     ...
  269                 191 = /dev/vcsa63       tty63 text/attribute contents
  270 
  271                 NOTE: These devices permit both read and write access.
  272 
  273   7 block       Loopback devices
  274                   0 = /dev/loop0        First loop device
  275                   1 = /dev/loop1        Second loop device
  276                     ...
  277 
  278                 The loop devices are used to mount filesystems not
  279                 associated with block devices.  The binding to the
  280                 loop devices is handled by mount(8) or losetup(8).
  281 
  282   8 block       SCSI disk devices (0-15)
  283                   0 = /dev/sda          First SCSI disk whole disk
  284                  16 = /dev/sdb          Second SCSI disk whole disk
  285                  32 = /dev/sdc          Third SCSI disk whole disk
  286                     ...
  287                 240 = /dev/sdp          Sixteenth SCSI disk whole disk
  288 
  289                 Partitions are handled in the same way as for IDE
  290                 disks (see major number 3) except that the limit on
  291                 partitions is 15.
  292 
  293   9 char        SCSI tape devices
  294                   0 = /dev/st0          First SCSI tape, mode 0
  295                   1 = /dev/st1          Second SCSI tape, mode 0
  296                     ...
  297                  32 = /dev/st0l         First SCSI tape, mode 1
  298                  33 = /dev/st1l         Second SCSI tape, mode 1
  299                     ...
  300                  64 = /dev/st0m         First SCSI tape, mode 2
  301                  65 = /dev/st1m         Second SCSI tape, mode 2
  302                     ...
  303                  96 = /dev/st0a         First SCSI tape, mode 3
  304                  97 = /dev/st1a         Second SCSI tape, mode 3
  305                       ...
  306                 128 = /dev/nst0         First SCSI tape, mode 0, no rewind
  307                 129 = /dev/nst1         Second SCSI tape, mode 0, no rewind
  308                     ...
  309                 160 = /dev/nst0l        First SCSI tape, mode 1, no rewind
  310                 161 = /dev/nst1l        Second SCSI tape, mode 1, no rewind
  311                     ...
  312                 192 = /dev/nst0m        First SCSI tape, mode 2, no rewind
  313                 193 = /dev/nst1m        Second SCSI tape, mode 2, no rewind
  314                     ...
  315                 224 = /dev/nst0a        First SCSI tape, mode 3, no rewind
  316                 225 = /dev/nst1a        Second SCSI tape, mode 3, no rewind
  317                     ...
  318 
  319                 "No rewind" refers to the omission of the default
  320                 automatic rewind on device close.  The MTREW or MTOFFL
  321                 ioctl()'s can be used to rewind the tape regardless of
  322                 the device used to access it.
  323 
  324   9 block       Metadisk (RAID) devices
  325                   0 = /dev/md0          First metadisk group
  326                   1 = /dev/md1          Second metadisk group
  327                     ...
  328 
  329                 The metadisk driver is used to span a
  330                 filesystem across multiple physical disks.
  331 
  332  10 char        Non-serial mice, misc features
  333                   0 = /dev/logibm       Logitech bus mouse
  334                   1 = /dev/psaux        PS/2-style mouse port
  335                   2 = /dev/inportbm     Microsoft Inport bus mouse
  336                   3 = /dev/atibm        ATI XL bus mouse
  337                   4 = /dev/jbm          J-mouse
  338                   4 = /dev/amigamouse   Amiga mouse (68k/Amiga)
  339                   5 = /dev/atarimouse   Atari mouse
  340                   6 = /dev/sunmouse     Sun mouse
  341                   7 = /dev/amigamouse1  Second Amiga mouse
  342                   8 = /dev/smouse       Simple serial mouse driver
  343                   9 = /dev/pc110pad     IBM PC-110 digitizer pad
  344                  10 = /dev/adbmouse     Apple Desktop Bus mouse
  345                  11 = /dev/vrtpanel     Vr41xx embedded touch panel
  346                  13 = /dev/vpcmouse     Connectix Virtual PC Mouse
  347                  14 = /dev/touchscreen/ucb1x00  UCB 1x00 touchscreen
  348                  15 = /dev/touchscreen/mk712    MK712 touchscreen
  349                 128 = /dev/beep         Fancy beep device
  350                 129 =
  351                 130 = /dev/watchdog     Watchdog timer port
  352                 131 = /dev/temperature  Machine internal temperature
  353                 132 = /dev/hwtrap       Hardware fault trap
  354                 133 = /dev/exttrp       External device trap
  355                 134 = /dev/apm_bios     Advanced Power Management BIOS
  356                 135 = /dev/rtc          Real Time Clock
  357                 139 = /dev/openprom     SPARC OpenBoot PROM
  358                 140 = /dev/relay8       Berkshire Products Octal relay card
  359                 141 = /dev/relay16      Berkshire Products ISO-16 relay card
  360                 142 =
  361                 143 = /dev/pciconf      PCI configuration space
  362                 144 = /dev/nvram        Non-volatile configuration RAM
  363                 145 = /dev/hfmodem      Soundcard shortwave modem control
  364                 146 = /dev/graphics     Linux/SGI graphics device
  365                 147 = /dev/opengl       Linux/SGI OpenGL pipe
  366                 148 = /dev/gfx          Linux/SGI graphics effects device
  367                 149 = /dev/input/mouse  Linux/SGI Irix emulation mouse
  368                 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
  369                 151 = /dev/led          Front panel LEDs
  370                 152 = /dev/kpoll        Kernel Poll Driver
  371                 153 = /dev/mergemem     Memory merge device
  372                 154 = /dev/pmu          Macintosh PowerBook power manager
  373                 155 = /dev/isictl       MultiTech ISICom serial control
  374                 156 = /dev/lcd          Front panel LCD display
  375                 157 = /dev/ac           Applicom Intl Profibus card
  376                 158 = /dev/nwbutton     Netwinder external button
  377                 159 = /dev/nwdebug      Netwinder debug interface
  378                 160 = /dev/nwflash      Netwinder flash memory
  379                 161 = /dev/userdma      User-space DMA access
  380                 162 = /dev/smbus        System Management Bus
  381                 163 = /dev/lik          Logitech Internet Keyboard
  382                 164 = /dev/ipmo         Intel Intelligent Platform Management
  383                 165 = /dev/vmmon        VMware virtual machine monitor
  384                 166 = /dev/i2o/ctl      I2O configuration manager
  385                 167 = /dev/specialix_sxctl Specialix serial control
  386                 168 = /dev/tcldrv       Technology Concepts serial control
  387                 169 = /dev/specialix_rioctl Specialix RIO serial control
  388                 170 = /dev/thinkpad/thinkpad    IBM Thinkpad devices
  389                 171 = /dev/srripc       QNX4 API IPC manager
  390                 172 = /dev/usemaclone   Semaphore clone device
  391                 173 = /dev/ipmikcs      Intelligent Platform Management
  392                 174 = /dev/uctrl        SPARCbook 3 microcontroller
  393                 175 = /dev/agpgart      AGP Graphics Address Remapping Table
  394                 176 = /dev/gtrsc        Gorgy Timing radio clock
  395                 177 = /dev/cbm          Serial CBM bus
  396                 178 = /dev/jsflash      JavaStation OS flash SIMM
  397                 179 = /dev/xsvc         High-speed shared-mem/semaphore service
  398                 180 = /dev/vrbuttons    Vr41xx button input device
  399                 181 = /dev/toshiba      Toshiba laptop SMM support
  400                 182 = /dev/perfctr      Performance-monitoring counters
  401                 183 = /dev/hwrng        Generic random number generator
  402                 184 = /dev/cpu/microcode CPU microcode update interface
  403                 186 = /dev/atomicps     Atomic shapshot of process state data
  404                 187 = /dev/irnet        IrNET device
  405                 188 = /dev/smbusbios    SMBus BIOS
  406                 189 = /dev/ussp_ctl     User space serial port control
  407                 190 = /dev/crash        Mission Critical Linux crash dump facility
  408                 191 = /dev/pcl181       <information missing>
  409                 192 = /dev/nas_xbus     NAS xbus LCD/buttons access
  410                 193 = /dev/d7s          SPARC 7-segment display
  411                 194 = /dev/zkshim       Zero-Knowledge network shim control
  412                 195 = /dev/elographics/e2201    Elographics touchscreen E271-2201
  413                 198 = /dev/sexec        Signed executable interface
  414                 199 = /dev/scanners/cuecat :CueCat barcode scanner
  415                 200 = /dev/net/tun      TAP/TUN network device
  416                 201 = /dev/button/gulpb Transmeta GULP-B buttons
  417                 202 = /dev/emd/ctl      Enhanced Metadisk RAID (EMD) control
  418                 204 = /dev/video/em8300         EM8300 DVD decoder control
  419                 205 = /dev/video/em8300_mv      EM8300 DVD decoder video
  420                 206 = /dev/video/em8300_ma      EM8300 DVD decoder audio
  421                 207 = /dev/video/em8300_sp      EM8300 DVD decoder subpicture
  422                 208 = /dev/compaq/cpqphpc       Compaq PCI Hot Plug Controller
  423                 209 = /dev/compaq/cpqrid        Compaq Remote Insight Driver
  424                 210 = /dev/impi/bt      IMPI coprocessor block transfer
  425                 211 = /dev/impi/smic    IMPI coprocessor stream interface
  426                 212 = /dev/watchdogs/0  First watchdog device
  427                 213 = /dev/watchdogs/1  Second watchdog device
  428                 214 = /dev/watchdogs/2  Third watchdog device
  429                 215 = /dev/watchdogs/3  Fourth watchdog device
  430                 216 = /dev/fujitsu/apanel       Fujitsu/Siemens application panel
  431                 217 = /dev/ni/natmotn           National Instruments Motion
  432                 218 = /dev/kchuid       Inter-process chuid control
  433                 219 = /dev/modems/mwave MWave modem firmware upload
  434                 220 = /dev/mptctl       Message passing technology (MPT) control
  435                 221 = /dev/mvista/hssdsi        Montavista PICMG hot swap system driver
  436                 222 = /dev/mvista/hasi          Montavista PICMG high availability
  437                 223 = /dev/input/uinput         User level driver support for input
  438                 224 = /dev/tpm          TCPA TPM driver
  439                 225 = /dev/pps          Pulse Per Second driver
  440                 226 = /dev/systrace     Systrace device
  441                 227 = /dev/mcelog       X86_64 Machine Check Exception driver
  442                 228 = /dev/hpet         HPET driver
  443                 229 = /dev/fuse         Fuse (virtual filesystem in user-space)
  444                 230 = /dev/midishare    MidiShare driver
  445                 231 = /dev/snapshot     System memory snapshot device
  446                 232 = /dev/kvm          Kernel-based virtual machine (hardware virtualization extensions)
  447                 233 = /dev/kmview       View-OS A process with a view
  448                 234 = /dev/btrfs-control        Btrfs control device
  449                 235 = /dev/autofs       Autofs control device
  450                 236 = /dev/mapper/control       Device-Mapper control device
  451                 237 = /dev/loop-control Loopback control device
  452                 238 = /dev/vhost-net    Host kernel accelerator for virtio net
  453 
  454                 240-254                 Reserved for local use
  455                 255                     Reserved for MISC_DYNAMIC_MINOR
  456 
  457  11 char        Raw keyboard device     (Linux/SPARC only)
  458                   0 = /dev/kbd          Raw keyboard device
  459 
  460  11 char        Serial Mux device       (Linux/PA-RISC only)
  461                   0 = /dev/ttyB0        First mux port
  462                   1 = /dev/ttyB1        Second mux port
  463                     ...
  464 
  465  11 block       SCSI CD-ROM devices
  466                   0 = /dev/scd0         First SCSI CD-ROM
  467                   1 = /dev/scd1         Second SCSI CD-ROM
  468                     ...
  469 
  470                 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
  471 
  472  12 char        QIC-02 tape
  473                   2 = /dev/ntpqic11     QIC-11, no rewind-on-close
  474                   3 = /dev/tpqic11      QIC-11, rewind-on-close
  475                   4 = /dev/ntpqic24     QIC-24, no rewind-on-close
  476                   5 = /dev/tpqic24      QIC-24, rewind-on-close
  477                   6 = /dev/ntpqic120    QIC-120, no rewind-on-close
  478                   7 = /dev/tpqic120     QIC-120, rewind-on-close
  479                   8 = /dev/ntpqic150    QIC-150, no rewind-on-close
  480                   9 = /dev/tpqic150     QIC-150, rewind-on-close
  481 
  482                 The device names specified are proposed -- if there
  483                 are "standard" names for these devices, please let me know.
  484 
  485  12 block
  486 
  487  13 char        Input core
  488                   0 = /dev/input/js0    First joystick
  489                   1 = /dev/input/js1    Second joystick
  490                     ...
  491                  32 = /dev/input/mouse0 First mouse
  492                  33 = /dev/input/mouse1 Second mouse
  493                     ...
  494                  63 = /dev/input/mice   Unified mouse
  495                  64 = /dev/input/event0 First event queue
  496                  65 = /dev/input/event1 Second event queue
  497                     ...
  498 
  499                 Each device type has 5 bits (32 minors).
  500 
  501  13 block       8-bit MFM/RLL/IDE controller
  502                   0 = /dev/xda          First XT disk whole disk
  503                  64 = /dev/xdb          Second XT disk whole disk
  504 
  505                 Partitions are handled in the same way as IDE disks
  506                 (see major number 3).
  507 
  508  14 char        Open Sound System (OSS)
  509                   0 = /dev/mixer        Mixer control
  510                   1 = /dev/sequencer    Audio sequencer
  511                   2 = /dev/midi00       First MIDI port
  512                   3 = /dev/dsp          Digital audio
  513                   4 = /dev/audio        Sun-compatible digital audio
  514                   6 =
  515                   7 = /dev/audioctl     SPARC audio control device
  516                   8 = /dev/sequencer2   Sequencer -- alternate device
  517                  16 = /dev/mixer1       Second soundcard mixer control
  518                  17 = /dev/patmgr0      Sequencer patch manager
  519                  18 = /dev/midi01       Second MIDI port
  520                  19 = /dev/dsp1         Second soundcard digital audio
  521                  20 = /dev/audio1       Second soundcard Sun digital audio
  522                  33 = /dev/patmgr1      Sequencer patch manager
  523                  34 = /dev/midi02       Third MIDI port
  524                  50 = /dev/midi03       Fourth MIDI port
  525 
  526  14 block
  527 
  528  15 char        Joystick
  529                   0 = /dev/js0          First analog joystick
  530                   1 = /dev/js1          Second analog joystick
  531                     ...
  532                 128 = /dev/djs0         First digital joystick
  533                 129 = /dev/djs1         Second digital joystick
  534                     ...
  535  15 block       Sony CDU-31A/CDU-33A CD-ROM
  536                   0 = /dev/sonycd       Sony CDU-31a CD-ROM
  537 
  538  16 char        Non-SCSI scanners
  539                   0 = /dev/gs4500       Genius 4500 handheld scanner
  540 
  541  16 block       GoldStar CD-ROM
  542                   0 = /dev/gscd         GoldStar CD-ROM
  543 
  544  17 char        OBSOLETE (was Chase serial card)
  545                   0 = /dev/ttyH0        First Chase port
  546                   1 = /dev/ttyH1        Second Chase port
  547                     ...
  548  17 block       Optics Storage CD-ROM
  549                   0 = /dev/optcd        Optics Storage CD-ROM
  550 
  551  18 char        OBSOLETE (was Chase serial card - alternate devices)
  552                   0 = /dev/cuh0         Callout device for ttyH0
  553                   1 = /dev/cuh1         Callout device for ttyH1
  554                     ...
  555  18 block       Sanyo CD-ROM
  556                   0 = /dev/sjcd         Sanyo CD-ROM
  557 
  558  19 char        Cyclades serial card
  559                   0 = /dev/ttyC0        First Cyclades port
  560                     ...
  561                  31 = /dev/ttyC31       32nd Cyclades port
  562 
  563  19 block       "Double" compressed disk
  564                   0 = /dev/double0      First compressed disk
  565                     ...
  566                   7 = /dev/double7      Eighth compressed disk
  567                 128 = /dev/cdouble0     Mirror of first compressed disk
  568                     ...
  569                 135 = /dev/cdouble7     Mirror of eighth compressed disk
  570 
  571                 See the Double documentation for the meaning of the
  572                 mirror devices.
  573 
  574  20 char        Cyclades serial card - alternate devices
  575                   0 = /dev/cub0         Callout device for ttyC0
  576                     ...
  577                  31 = /dev/cub31        Callout device for ttyC31
  578 
  579  20 block       Hitachi CD-ROM (under development)
  580                   0 = /dev/hitcd        Hitachi CD-ROM
  581 
  582  21 char        Generic SCSI access
  583                   0 = /dev/sg0          First generic SCSI device
  584                   1 = /dev/sg1          Second generic SCSI device
  585                     ...
  586 
  587                 Most distributions name these /dev/sga, /dev/sgb...;
  588                 this sets an unnecessary limit of 26 SCSI devices in
  589                 the system and is counter to standard Linux
  590                 device-naming practice.
  591 
  592  21 block       Acorn MFM hard drive interface
  593                   0 = /dev/mfma         First MFM drive whole disk
  594                  64 = /dev/mfmb         Second MFM drive whole disk
  595 
  596                 This device is used on the ARM-based Acorn RiscPC.
  597                 Partitions are handled the same way as for IDE disks
  598                 (see major number 3).
  599 
  600  22 char        Digiboard serial card
  601                   0 = /dev/ttyD0        First Digiboard port
  602                   1 = /dev/ttyD1        Second Digiboard port
  603                     ...
  604  22 block       Second IDE hard disk/CD-ROM interface
  605                   0 = /dev/hdc          Master: whole disk (or CD-ROM)
  606                  64 = /dev/hdd          Slave: whole disk (or CD-ROM)
  607 
  608                 Partitions are handled the same way as for the first
  609                 interface (see major number 3).
  610 
  611  23 char        Digiboard serial card - alternate devices
  612                   0 = /dev/cud0         Callout device for ttyD0
  613                   1 = /dev/cud1         Callout device for ttyD1
  614                       ...
  615  23 block       Mitsumi proprietary CD-ROM
  616                   0 = /dev/mcd          Mitsumi CD-ROM
  617 
  618  24 char        Stallion serial card
  619                   0 = /dev/ttyE0        Stallion port 0 card 0
  620                   1 = /dev/ttyE1        Stallion port 1 card 0
  621                     ...
  622                  64 = /dev/ttyE64       Stallion port 0 card 1
  623                  65 = /dev/ttyE65       Stallion port 1 card 1
  624                       ...
  625                 128 = /dev/ttyE128      Stallion port 0 card 2
  626                 129 = /dev/ttyE129      Stallion port 1 card 2
  627                     ...
  628                 192 = /dev/ttyE192      Stallion port 0 card 3
  629                 193 = /dev/ttyE193      Stallion port 1 card 3
  630                     ...
  631  24 block       Sony CDU-535 CD-ROM
  632                   0 = /dev/cdu535       Sony CDU-535 CD-ROM
  633 
  634  25 char        Stallion serial card - alternate devices
  635                   0 = /dev/cue0         Callout device for ttyE0
  636                   1 = /dev/cue1         Callout device for ttyE1
  637                     ...
  638                  64 = /dev/cue64        Callout device for ttyE64
  639                  65 = /dev/cue65        Callout device for ttyE65
  640                     ...
  641                 128 = /dev/cue128       Callout device for ttyE128
  642                 129 = /dev/cue129       Callout device for ttyE129
  643                     ...
  644                 192 = /dev/cue192       Callout device for ttyE192
  645                 193 = /dev/cue193       Callout device for ttyE193
  646                       ...
  647  25 block       First Matsushita (Panasonic/SoundBlaster) CD-ROM
  648                   0 = /dev/sbpcd0       Panasonic CD-ROM controller 0 unit 0
  649                   1 = /dev/sbpcd1       Panasonic CD-ROM controller 0 unit 1
  650                   2 = /dev/sbpcd2       Panasonic CD-ROM controller 0 unit 2
  651                   3 = /dev/sbpcd3       Panasonic CD-ROM controller 0 unit 3
  652 
  653  26 char
  654 
  655  26 block       Second Matsushita (Panasonic/SoundBlaster) CD-ROM
  656                   0 = /dev/sbpcd4       Panasonic CD-ROM controller 1 unit 0
  657                   1 = /dev/sbpcd5       Panasonic CD-ROM controller 1 unit 1
  658                   2 = /dev/sbpcd6       Panasonic CD-ROM controller 1 unit 2
  659                   3 = /dev/sbpcd7       Panasonic CD-ROM controller 1 unit 3
  660 
  661  27 char        QIC-117 tape
  662                   0 = /dev/qft0         Unit 0, rewind-on-close
  663                   1 = /dev/qft1         Unit 1, rewind-on-close
  664                   2 = /dev/qft2         Unit 2, rewind-on-close
  665                   3 = /dev/qft3         Unit 3, rewind-on-close
  666                   4 = /dev/nqft0        Unit 0, no rewind-on-close
  667                   5 = /dev/nqft1        Unit 1, no rewind-on-close
  668                   6 = /dev/nqft2        Unit 2, no rewind-on-close
  669                   7 = /dev/nqft3        Unit 3, no rewind-on-close
  670                  16 = /dev/zqft0        Unit 0, rewind-on-close, compression
  671                  17 = /dev/zqft1        Unit 1, rewind-on-close, compression
  672                  18 = /dev/zqft2        Unit 2, rewind-on-close, compression
  673                  19 = /dev/zqft3        Unit 3, rewind-on-close, compression
  674                  20 = /dev/nzqft0       Unit 0, no rewind-on-close, compression
  675                  21 = /dev/nzqft1       Unit 1, no rewind-on-close, compression
  676                  22 = /dev/nzqft2       Unit 2, no rewind-on-close, compression
  677                  23 = /dev/nzqft3       Unit 3, no rewind-on-close, compression
  678                  32 = /dev/rawqft0      Unit 0, rewind-on-close, no file marks
  679                  33 = /dev/rawqft1      Unit 1, rewind-on-close, no file marks
  680                  34 = /dev/rawqft2      Unit 2, rewind-on-close, no file marks
  681                  35 = /dev/rawqft3      Unit 3, rewind-on-close, no file marks
  682                  36 = /dev/nrawqft0     Unit 0, no rewind-on-close, no file marks
  683                  37 = /dev/nrawqft1     Unit 1, no rewind-on-close, no file marks
  684                  38 = /dev/nrawqft2     Unit 2, no rewind-on-close, no file marks
  685                  39 = /dev/nrawqft3     Unit 3, no rewind-on-close, no file marks
  686 
  687  27 block       Third Matsushita (Panasonic/SoundBlaster) CD-ROM
  688                   0 = /dev/sbpcd8       Panasonic CD-ROM controller 2 unit 0
  689                   1 = /dev/sbpcd9       Panasonic CD-ROM controller 2 unit 1
  690                   2 = /dev/sbpcd10      Panasonic CD-ROM controller 2 unit 2
  691                   3 = /dev/sbpcd11      Panasonic CD-ROM controller 2 unit 3
  692 
  693  28 char        Stallion serial card - card programming
  694                   0 = /dev/staliomem0   First Stallion card I/O memory
  695                   1 = /dev/staliomem1   Second Stallion card I/O memory
  696                   2 = /dev/staliomem2   Third Stallion card I/O memory
  697                   3 = /dev/staliomem3   Fourth Stallion card I/O memory
  698 
  699  28 char        Atari SLM ACSI laser printer (68k/Atari)
  700                   0 = /dev/slm0         First SLM laser printer
  701                   1 = /dev/slm1         Second SLM laser printer
  702                     ...
  703  28 block       Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
  704                   0 = /dev/sbpcd12      Panasonic CD-ROM controller 3 unit 0
  705                   1 = /dev/sbpcd13      Panasonic CD-ROM controller 3 unit 1
  706                   2 = /dev/sbpcd14      Panasonic CD-ROM controller 3 unit 2
  707                   3 = /dev/sbpcd15      Panasonic CD-ROM controller 3 unit 3
  708 
  709  28 block       ACSI disk (68k/Atari)
  710                   0 = /dev/ada          First ACSI disk whole disk
  711                  16 = /dev/adb          Second ACSI disk whole disk
  712                  32 = /dev/adc          Third ACSI disk whole disk
  713                     ...
  714                 240 = /dev/adp          16th ACSI disk whole disk
  715 
  716                 Partitions are handled in the same way as for IDE
  717                 disks (see major number 3) except that the limit on
  718                 partitions is 15, like SCSI.
  719 
  720  29 char        Universal frame buffer
  721                   0 = /dev/fb0          First frame buffer
  722                   1 = /dev/fb1          Second frame buffer
  723                     ...
  724                  31 = /dev/fb31         32nd frame buffer
  725 
  726  29 block       Aztech/Orchid/Okano/Wearnes CD-ROM
  727                   0 = /dev/aztcd        Aztech CD-ROM
  728 
  729  30 char        iBCS-2 compatibility devices
  730                   0 = /dev/socksys      Socket access
  731                   1 = /dev/spx          SVR3 local X interface
  732                  32 = /dev/inet/ip      Network access
  733                  33 = /dev/inet/icmp
  734                  34 = /dev/inet/ggp
  735                  35 = /dev/inet/ipip
  736                  36 = /dev/inet/tcp
  737                  37 = /dev/inet/egp
  738                  38 = /dev/inet/pup
  739                  39 = /dev/inet/udp
  740                  40 = /dev/inet/idp
  741                  41 = /dev/inet/rawip
  742 
  743                 Additionally, iBCS-2 requires the following links:
  744 
  745                 /dev/ip -> /dev/inet/ip
  746                 /dev/icmp -> /dev/inet/icmp
  747                 /dev/ggp -> /dev/inet/ggp
  748                 /dev/ipip -> /dev/inet/ipip
  749                 /dev/tcp -> /dev/inet/tcp
  750                 /dev/egp -> /dev/inet/egp
  751                 /dev/pup -> /dev/inet/pup
  752                 /dev/udp -> /dev/inet/udp
  753                 /dev/idp -> /dev/inet/idp
  754                 /dev/rawip -> /dev/inet/rawip
  755                 /dev/inet/arp -> /dev/inet/udp
  756                 /dev/inet/rip -> /dev/inet/udp
  757                 /dev/nfsd -> /dev/socksys
  758                 /dev/X0R -> /dev/null (? apparently not required ?)
  759 
  760  30 block       Philips LMS CM-205 CD-ROM
  761                   0 = /dev/cm205cd      Philips LMS CM-205 CD-ROM
  762 
  763                 /dev/lmscd is an older name for this device.  This
  764                 driver does not work with the CM-205MS CD-ROM.
  765 
  766  31 char        MPU-401 MIDI
  767                   0 = /dev/mpu401data   MPU-401 data port
  768                   1 = /dev/mpu401stat   MPU-401 status port
  769 
  770  31 block       ROM/flash memory card
  771                   0 = /dev/rom0         First ROM card (rw)
  772                       ...
  773                   7 = /dev/rom7         Eighth ROM card (rw)
  774                   8 = /dev/rrom0        First ROM card (ro)
  775                     ...
  776                  15 = /dev/rrom7        Eighth ROM card (ro)
  777                  16 = /dev/flash0       First flash memory card (rw)
  778                     ...
  779                  23 = /dev/flash7       Eighth flash memory card (rw)
  780                  24 = /dev/rflash0      First flash memory card (ro)
  781                     ...
  782                  31 = /dev/rflash7      Eighth flash memory card (ro)
  783 
  784                 The read-write (rw) devices support back-caching
  785                 written data in RAM, as well as writing to flash RAM
  786                 devices.  The read-only devices (ro) support reading
  787                 only.
  788 
  789  32 char        Specialix serial card
  790                   0 = /dev/ttyX0        First Specialix port
  791                   1 = /dev/ttyX1        Second Specialix port
  792                     ...
  793  32 block       Philips LMS CM-206 CD-ROM
  794                   0 = /dev/cm206cd      Philips LMS CM-206 CD-ROM
  795 
  796  33 char        Specialix serial card - alternate devices
  797                   0 = /dev/cux0         Callout device for ttyX0
  798                   1 = /dev/cux1         Callout device for ttyX1
  799                     ...
  800  33 block       Third IDE hard disk/CD-ROM interface
  801                   0 = /dev/hde          Master: whole disk (or CD-ROM)
  802                  64 = /dev/hdf          Slave: whole disk (or CD-ROM)
  803 
  804                 Partitions are handled the same way as for the first
  805                 interface (see major number 3).
  806 
  807  34 char        Z8530 HDLC driver
  808                   0 = /dev/scc0         First Z8530, first port
  809                   1 = /dev/scc1         First Z8530, second port
  810                   2 = /dev/scc2         Second Z8530, first port
  811                   3 = /dev/scc3         Second Z8530, second port
  812                     ...
  813 
  814                 In a previous version these devices were named
  815                 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
  816                 on.
  817 
  818  34 block       Fourth IDE hard disk/CD-ROM interface
  819                   0 = /dev/hdg          Master: whole disk (or CD-ROM)
  820                  64 = /dev/hdh          Slave: whole disk (or CD-ROM)
  821 
  822                 Partitions are handled the same way as for the first
  823                 interface (see major number 3).
  824 
  825  35 char        tclmidi MIDI driver
  826                   0 = /dev/midi0        First MIDI port, kernel timed
  827                   1 = /dev/midi1        Second MIDI port, kernel timed
  828                   2 = /dev/midi2        Third MIDI port, kernel timed
  829                   3 = /dev/midi3        Fourth MIDI port, kernel timed
  830                  64 = /dev/rmidi0       First MIDI port, untimed
  831                  65 = /dev/rmidi1       Second MIDI port, untimed
  832                  66 = /dev/rmidi2       Third MIDI port, untimed
  833                  67 = /dev/rmidi3       Fourth MIDI port, untimed
  834                 128 = /dev/smpte0       First MIDI port, SMPTE timed
  835                 129 = /dev/smpte1       Second MIDI port, SMPTE timed
  836                 130 = /dev/smpte2       Third MIDI port, SMPTE timed
  837                 131 = /dev/smpte3       Fourth MIDI port, SMPTE timed
  838 
  839  35 block       Slow memory ramdisk
  840                   0 = /dev/slram        Slow memory ramdisk
  841 
  842  36 char        Netlink support
  843                   0 = /dev/route        Routing, device updates, kernel to user
  844                   1 = /dev/skip         enSKIP security cache control
  845                   3 = /dev/fwmonitor    Firewall packet copies
  846                  16 = /dev/tap0         First Ethertap device
  847                     ...
  848                  31 = /dev/tap15        16th Ethertap device
  849 
  850  36 block       OBSOLETE (was MCA ESDI hard disk)
  851 
  852  37 char        IDE tape
  853                   0 = /dev/ht0          First IDE tape
  854                   1 = /dev/ht1          Second IDE tape
  855                     ...
  856                 128 = /dev/nht0         First IDE tape, no rewind-on-close
  857                 129 = /dev/nht1         Second IDE tape, no rewind-on-close
  858                     ...
  859 
  860                 Currently, only one IDE tape drive is supported.
  861 
  862  37 block       Zorro II ramdisk
  863                   0 = /dev/z2ram        Zorro II ramdisk
  864 
  865  38 char        Myricom PCI Myrinet board
  866                   0 = /dev/mlanai0      First Myrinet board
  867                   1 = /dev/mlanai1      Second Myrinet board
  868                     ...
  869 
  870                 This device is used for status query, board control
  871                 and "user level packet I/O."  This board is also
  872                 accessible as a standard networking "eth" device.
  873 
  874  38 block       OBSOLETE (was Linux/AP+)
  875 
  876  39 char        ML-16P experimental I/O board
  877                   0 = /dev/ml16pa-a0    First card, first analog channel
  878                   1 = /dev/ml16pa-a1    First card, second analog channel
  879                     ...
  880                  15 = /dev/ml16pa-a15   First card, 16th analog channel
  881                  16 = /dev/ml16pa-d     First card, digital lines
  882                  17 = /dev/ml16pa-c0    First card, first counter/timer
  883                  18 = /dev/ml16pa-c1    First card, second counter/timer
  884                  19 = /dev/ml16pa-c2    First card, third counter/timer
  885                  32 = /dev/ml16pb-a0    Second card, first analog channel
  886                  33 = /dev/ml16pb-a1    Second card, second analog channel
  887                     ...
  888                  47 = /dev/ml16pb-a15   Second card, 16th analog channel
  889                  48 = /dev/ml16pb-d     Second card, digital lines
  890                  49 = /dev/ml16pb-c0    Second card, first counter/timer
  891                  50 = /dev/ml16pb-c1    Second card, second counter/timer
  892                  51 = /dev/ml16pb-c2    Second card, third counter/timer
  893                       ...
  894  39 block
  895 
  896  40 char
  897 
  898  40 block
  899 
  900  41 char        Yet Another Micro Monitor
  901                   0 = /dev/yamm         Yet Another Micro Monitor
  902 
  903  41 block
  904 
  905  42 char        Demo/sample use
  906 
  907  42 block       Demo/sample use
  908 
  909                 This number is intended for use in sample code, as
  910                 well as a general "example" device number.  It
  911                 should never be used for a device driver that is being
  912                 distributed; either obtain an official number or use
  913                 the local/experimental range.  The sudden addition or
  914                 removal of a driver with this number should not cause
  915                 ill effects to the system (bugs excepted.)
  916 
  917                 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
  918                 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
  919 
  920  43 char        isdn4linux virtual modem
  921                   0 = /dev/ttyI0        First virtual modem
  922                     ...
  923                  63 = /dev/ttyI63       64th virtual modem
  924 
  925  43 block       Network block devices
  926                   0 = /dev/nb0          First network block device
  927                   1 = /dev/nb1          Second network block device
  928                     ...
  929 
  930                 Network Block Device is somehow similar to loopback
  931                 devices: If you read from it, it sends packet across
  932                 network asking server for data. If you write to it, it
  933                 sends packet telling server to write. It could be used
  934                 to mounting filesystems over the net, swapping over
  935                 the net, implementing block device in userland etc.
  936 
  937  44 char        isdn4linux virtual modem - alternate devices
  938                   0 = /dev/cui0         Callout device for ttyI0
  939                     ...
  940                  63 = /dev/cui63        Callout device for ttyI63
  941 
  942  44 block       Flash Translation Layer (FTL) filesystems
  943                   0 = /dev/ftla         FTL on first Memory Technology Device
  944                  16 = /dev/ftlb         FTL on second Memory Technology Device
  945                  32 = /dev/ftlc         FTL on third Memory Technology Device
  946                     ...
  947                 240 = /dev/ftlp         FTL on 16th Memory Technology Device
  948 
  949                 Partitions are handled in the same way as for IDE
  950                 disks (see major number 3) except that the partition
  951                 limit is 15 rather than 63 per disk (same as SCSI.)
  952 
  953  45 char        isdn4linux ISDN BRI driver
  954                   0 = /dev/isdn0        First virtual B channel raw data
  955                     ...
  956                  63 = /dev/isdn63       64th virtual B channel raw data
  957                  64 = /dev/isdnctrl0    First channel control/debug
  958                     ...
  959                 127 = /dev/isdnctrl63   64th channel control/debug
  960 
  961                 128 = /dev/ippp0        First SyncPPP device
  962                     ...
  963                 191 = /dev/ippp63       64th SyncPPP device
  964 
  965                 255 = /dev/isdninfo     ISDN monitor interface
  966 
  967  45 block       Parallel port IDE disk devices
  968                   0 = /dev/pda          First parallel port IDE disk
  969                  16 = /dev/pdb          Second parallel port IDE disk
  970                  32 = /dev/pdc          Third parallel port IDE disk
  971                  48 = /dev/pdd          Fourth parallel port IDE disk
  972 
  973                 Partitions are handled in the same way as for IDE
  974                 disks (see major number 3) except that the partition
  975                 limit is 15 rather than 63 per disk.
  976 
  977  46 char        Comtrol Rocketport serial card
  978                   0 = /dev/ttyR0        First Rocketport port
  979                   1 = /dev/ttyR1        Second Rocketport port
  980                     ...
  981  46 block       Parallel port ATAPI CD-ROM devices
  982                   0 = /dev/pcd0         First parallel port ATAPI CD-ROM
  983                   1 = /dev/pcd1         Second parallel port ATAPI CD-ROM
  984                   2 = /dev/pcd2         Third parallel port ATAPI CD-ROM
  985                   3 = /dev/pcd3         Fourth parallel port ATAPI CD-ROM
  986 
  987  47 char        Comtrol Rocketport serial card - alternate devices
  988                   0 = /dev/cur0         Callout device for ttyR0
  989                   1 = /dev/cur1         Callout device for ttyR1
  990                     ...
  991  47 block       Parallel port ATAPI disk devices
  992                   0 = /dev/pf0          First parallel port ATAPI disk
  993                   1 = /dev/pf1          Second parallel port ATAPI disk
  994                   2 = /dev/pf2          Third parallel port ATAPI disk
  995                   3 = /dev/pf3          Fourth parallel port ATAPI disk
  996 
  997                 This driver is intended for floppy disks and similar
  998                 devices and hence does not support partitioning.
  999 
 1000  48 char        SDL RISCom serial card
 1001                   0 = /dev/ttyL0        First RISCom port
 1002                   1 = /dev/ttyL1        Second RISCom port
 1003                     ...
 1004  48 block       Mylex DAC960 PCI RAID controller; first controller
 1005                   0 = /dev/rd/c0d0      First disk, whole disk
 1006                   8 = /dev/rd/c0d1      Second disk, whole disk
 1007                     ...
 1008                 248 = /dev/rd/c0d31     32nd disk, whole disk
 1009 
 1010                 For partitions add:
 1011                   0 = /dev/rd/c?d?      Whole disk
 1012                   1 = /dev/rd/c?d?p1    First partition
 1013                     ...
 1014                   7 = /dev/rd/c?d?p7    Seventh partition
 1015 
 1016  49 char        SDL RISCom serial card - alternate devices
 1017                   0 = /dev/cul0         Callout device for ttyL0
 1018                   1 = /dev/cul1         Callout device for ttyL1
 1019                     ...
 1020  49 block       Mylex DAC960 PCI RAID controller; second controller
 1021                   0 = /dev/rd/c1d0      First disk, whole disk
 1022                   8 = /dev/rd/c1d1      Second disk, whole disk
 1023                     ...
 1024                 248 = /dev/rd/c1d31     32nd disk, whole disk
 1025 
 1026                 Partitions are handled as for major 48.
 1027 
 1028  50 char        Reserved for GLINT
 1029 
 1030  50 block       Mylex DAC960 PCI RAID controller; third controller
 1031                   0 = /dev/rd/c2d0      First disk, whole disk
 1032                   8 = /dev/rd/c2d1      Second disk, whole disk
 1033                     ...
 1034                 248 = /dev/rd/c2d31     32nd disk, whole disk
 1035 
 1036  51 char        Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
 1037                   0 = /dev/bc0          First Baycom radio modem
 1038                   1 = /dev/bc1          Second Baycom radio modem
 1039                     ...
 1040  51 block       Mylex DAC960 PCI RAID controller; fourth controller
 1041                   0 = /dev/rd/c3d0      First disk, whole disk
 1042                   8 = /dev/rd/c3d1      Second disk, whole disk
 1043                     ...
 1044                 248 = /dev/rd/c3d31     32nd disk, whole disk
 1045 
 1046                 Partitions are handled as for major 48.
 1047 
 1048  52 char        Spellcaster DataComm/BRI ISDN card
 1049                   0 = /dev/dcbri0       First DataComm card
 1050                   1 = /dev/dcbri1       Second DataComm card
 1051                   2 = /dev/dcbri2       Third DataComm card
 1052                   3 = /dev/dcbri3       Fourth DataComm card
 1053 
 1054  52 block       Mylex DAC960 PCI RAID controller; fifth controller
 1055                   0 = /dev/rd/c4d0      First disk, whole disk
 1056                   8 = /dev/rd/c4d1      Second disk, whole disk
 1057                     ...
 1058                 248 = /dev/rd/c4d31     32nd disk, whole disk
 1059 
 1060                 Partitions are handled as for major 48.
 1061 
 1062  53 char        BDM interface for remote debugging MC683xx microcontrollers
 1063                   0 = /dev/pd_bdm0      PD BDM interface on lp0
 1064                   1 = /dev/pd_bdm1      PD BDM interface on lp1
 1065                   2 = /dev/pd_bdm2      PD BDM interface on lp2
 1066                   4 = /dev/icd_bdm0     ICD BDM interface on lp0
 1067                   5 = /dev/icd_bdm1     ICD BDM interface on lp1
 1068                   6 = /dev/icd_bdm2     ICD BDM interface on lp2
 1069 
 1070                 This device is used for the interfacing to the MC683xx
 1071                 microcontrollers via Background Debug Mode by use of a
 1072                 Parallel Port interface. PD is the Motorola Public
 1073                 Domain Interface and ICD is the commercial interface
 1074                 by P&E.
 1075 
 1076  53 block       Mylex DAC960 PCI RAID controller; sixth controller
 1077                   0 = /dev/rd/c5d0      First disk, whole disk
 1078                   8 = /dev/rd/c5d1      Second disk, whole disk
 1079                     ...
 1080                 248 = /dev/rd/c5d31     32nd disk, whole disk
 1081 
 1082                 Partitions are handled as for major 48.
 1083 
 1084  54 char        Electrocardiognosis Holter serial card
 1085                   0 = /dev/holter0      First Holter port
 1086                   1 = /dev/holter1      Second Holter port
 1087                   2 = /dev/holter2      Third Holter port
 1088 
 1089                 A custom serial card used by Electrocardiognosis SRL
 1090                 <mseritan@ottonel.pub.ro> to transfer data from Holter
 1091                 24-hour heart monitoring equipment.
 1092 
 1093  54 block       Mylex DAC960 PCI RAID controller; seventh controller
 1094                   0 = /dev/rd/c6d0      First disk, whole disk
 1095                   8 = /dev/rd/c6d1      Second disk, whole disk
 1096                     ...
 1097                 248 = /dev/rd/c6d31     32nd disk, whole disk
 1098 
 1099                 Partitions are handled as for major 48.
 1100 
 1101  55 char        DSP56001 digital signal processor
 1102                   0 = /dev/dsp56k       First DSP56001
 1103 
 1104  55 block       Mylex DAC960 PCI RAID controller; eighth controller
 1105                   0 = /dev/rd/c7d0      First disk, whole disk
 1106                   8 = /dev/rd/c7d1      Second disk, whole disk
 1107                     ...
 1108                 248 = /dev/rd/c7d31     32nd disk, whole disk
 1109 
 1110                 Partitions are handled as for major 48.
 1111 
 1112  56 char        Apple Desktop Bus
 1113                   0 = /dev/adb          ADB bus control
 1114 
 1115                 Additional devices will be added to this number, all
 1116                 starting with /dev/adb.
 1117 
 1118  56 block       Fifth IDE hard disk/CD-ROM interface
 1119                   0 = /dev/hdi          Master: whole disk (or CD-ROM)
 1120                  64 = /dev/hdj          Slave: whole disk (or CD-ROM)
 1121 
 1122                 Partitions are handled the same way as for the first
 1123                 interface (see major number 3).
 1124 
 1125  57 char        Hayes ESP serial card
 1126                   0 = /dev/ttyP0        First ESP port
 1127                   1 = /dev/ttyP1        Second ESP port
 1128                     ...
 1129 
 1130  57 block       Sixth IDE hard disk/CD-ROM interface
 1131                   0 = /dev/hdk          Master: whole disk (or CD-ROM)
 1132                  64 = /dev/hdl          Slave: whole disk (or CD-ROM)
 1133 
 1134                 Partitions are handled the same way as for the first
 1135                 interface (see major number 3).
 1136 
 1137  58 char        Hayes ESP serial card - alternate devices
 1138                   0 = /dev/cup0         Callout device for ttyP0
 1139                   1 = /dev/cup1         Callout device for ttyP1
 1140                     ...
 1141 
 1142  58 block       Reserved for logical volume manager
 1143 
 1144  59 char        sf firewall package
 1145                   0 = /dev/firewall     Communication with sf kernel module
 1146 
 1147  59 block       Generic PDA filesystem device
 1148                   0 = /dev/pda0         First PDA device
 1149                   1 = /dev/pda1         Second PDA device
 1150                     ...
 1151 
 1152                 The pda devices are used to mount filesystems on
 1153                 remote pda's (basically slow handheld machines with
 1154                 proprietary OS's and limited memory and storage
 1155                 running small fs translation drivers) through serial /
 1156                 IRDA / parallel links.
 1157 
 1158                 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
 1159 
 1160  60-63 char     LOCAL/EXPERIMENTAL USE
 1161 
 1162  60-63 block    LOCAL/EXPERIMENTAL USE
 1163                 Allocated for local/experimental use.  For devices not
 1164                 assigned official numbers, these ranges should be
 1165                 used in order to avoid conflicting with future assignments.
 1166 
 1167  64 char        ENskip kernel encryption package
 1168                   0 = /dev/enskip       Communication with ENskip kernel module
 1169 
 1170  64 block       Scramdisk/DriveCrypt encrypted devices
 1171                   0 = /dev/scramdisk/master    Master node for ioctls
 1172                   1 = /dev/scramdisk/1         First encrypted device
 1173                   2 = /dev/scramdisk/2         Second encrypted device
 1174                   ...
 1175                 255 = /dev/scramdisk/255       255th encrypted device
 1176 
 1177                 The filename of the encrypted container and the passwords
 1178                 are sent via ioctls (using the sdmount tool) to the master
 1179                 node which then activates them via one of the
 1180                 /dev/scramdisk/x nodes for loop mounting (all handled
 1181                 through the sdmount tool).
 1182 
 1183                 Requested by: andy@scramdisklinux.org
 1184 
 1185  65 char        Sundance "plink" Transputer boards (obsolete, unused)
 1186                   0 = /dev/plink0       First plink device
 1187                   1 = /dev/plink1       Second plink device
 1188                   2 = /dev/plink2       Third plink device
 1189                   3 = /dev/plink3       Fourth plink device
 1190                  64 = /dev/rplink0      First plink device, raw
 1191                  65 = /dev/rplink1      Second plink device, raw
 1192                  66 = /dev/rplink2      Third plink device, raw
 1193                  67 = /dev/rplink3      Fourth plink device, raw
 1194                 128 = /dev/plink0d      First plink device, debug
 1195                 129 = /dev/plink1d      Second plink device, debug
 1196                 130 = /dev/plink2d      Third plink device, debug
 1197                 131 = /dev/plink3d      Fourth plink device, debug
 1198                 192 = /dev/rplink0d     First plink device, raw, debug
 1199                 193 = /dev/rplink1d     Second plink device, raw, debug
 1200                 194 = /dev/rplink2d     Third plink device, raw, debug
 1201                 195 = /dev/rplink3d     Fourth plink device, raw, debug
 1202 
 1203                 This is a commercial driver; contact James Howes
 1204                 <jth@prosig.demon.co.uk> for information.
 1205 
 1206  65 block       SCSI disk devices (16-31)
 1207                   0 = /dev/sdq          17th SCSI disk whole disk
 1208                  16 = /dev/sdr          18th SCSI disk whole disk
 1209                  32 = /dev/sds          19th SCSI disk whole disk
 1210                     ...
 1211                 240 = /dev/sdaf         32nd SCSI disk whole disk
 1212 
 1213                 Partitions are handled in the same way as for IDE
 1214                 disks (see major number 3) except that the limit on
 1215                 partitions is 15.
 1216 
 1217  66 char        YARC PowerPC PCI coprocessor card
 1218                   0 = /dev/yppcpci0     First YARC card
 1219                   1 = /dev/yppcpci1     Second YARC card
 1220                     ...
 1221 
 1222  66 block       SCSI disk devices (32-47)
 1223                   0 = /dev/sdag         33th SCSI disk whole disk
 1224                  16 = /dev/sdah         34th SCSI disk whole disk
 1225                  32 = /dev/sdai         35th SCSI disk whole disk
 1226                     ...
 1227                 240 = /dev/sdav         48nd SCSI disk whole disk
 1228 
 1229                 Partitions are handled in the same way as for IDE
 1230                 disks (see major number 3) except that the limit on
 1231                 partitions is 15.
 1232 
 1233  67 char        Coda network file system
 1234                   0 = /dev/cfs0         Coda cache manager
 1235 
 1236                 See http://www.coda.cs.cmu.edu for information about Coda.
 1237 
 1238  67 block       SCSI disk devices (48-63)
 1239                   0 = /dev/sdaw         49th SCSI disk whole disk
 1240                  16 = /dev/sdax         50th SCSI disk whole disk
 1241                  32 = /dev/sday         51st SCSI disk whole disk
 1242                     ...
 1243                 240 = /dev/sdbl         64th SCSI disk whole disk
 1244 
 1245                 Partitions are handled in the same way as for IDE
 1246                 disks (see major number 3) except that the limit on
 1247                 partitions is 15.
 1248 
 1249  68 char        CAPI 2.0 interface
 1250                   0 = /dev/capi20       Control device
 1251                   1 = /dev/capi20.00    First CAPI 2.0 application
 1252                   2 = /dev/capi20.01    Second CAPI 2.0 application
 1253                     ...
 1254                  20 = /dev/capi20.19    19th CAPI 2.0 application
 1255 
 1256                 ISDN CAPI 2.0 driver for use with CAPI 2.0
 1257                 applications; currently supports the AVM B1 card.
 1258 
 1259  68 block       SCSI disk devices (64-79)
 1260                   0 = /dev/sdbm         65th SCSI disk whole disk
 1261                  16 = /dev/sdbn         66th SCSI disk whole disk
 1262                  32 = /dev/sdbo         67th SCSI disk whole disk
 1263                     ...
 1264                 240 = /dev/sdcb         80th SCSI disk whole disk
 1265 
 1266                 Partitions are handled in the same way as for IDE
 1267                 disks (see major number 3) except that the limit on
 1268                 partitions is 15.
 1269 
 1270  69 char        MA16 numeric accelerator card
 1271                   0 = /dev/ma16         Board memory access
 1272 
 1273  69 block       SCSI disk devices (80-95)
 1274                   0 = /dev/sdcc         81st SCSI disk whole disk
 1275                  16 = /dev/sdcd         82nd SCSI disk whole disk
 1276                  32 = /dev/sdce         83th SCSI disk whole disk
 1277                     ...
 1278                 240 = /dev/sdcr         96th SCSI disk whole disk
 1279 
 1280                 Partitions are handled in the same way as for IDE
 1281                 disks (see major number 3) except that the limit on
 1282                 partitions is 15.
 1283 
 1284  70 char        SpellCaster Protocol Services Interface
 1285                   0 = /dev/apscfg       Configuration interface
 1286                   1 = /dev/apsauth      Authentication interface
 1287                   2 = /dev/apslog       Logging interface
 1288                   3 = /dev/apsdbg       Debugging interface
 1289                  64 = /dev/apsisdn      ISDN command interface
 1290                  65 = /dev/apsasync     Async command interface
 1291                 128 = /dev/apsmon       Monitor interface
 1292 
 1293  70 block       SCSI disk devices (96-111)
 1294                   0 = /dev/sdcs         97th SCSI disk whole disk
 1295                  16 = /dev/sdct         98th SCSI disk whole disk
 1296                  32 = /dev/sdcu         99th SCSI disk whole disk
 1297                     ...
 1298                 240 = /dev/sddh         112nd SCSI disk whole disk
 1299 
 1300                 Partitions are handled in the same way as for IDE
 1301                 disks (see major number 3) except that the limit on
 1302                 partitions is 15.
 1303 
 1304  71 char        Computone IntelliPort II serial card
 1305                   0 = /dev/ttyF0        IntelliPort II board 0, port 0
 1306                   1 = /dev/ttyF1        IntelliPort II board 0, port 1
 1307                     ...
 1308                  63 = /dev/ttyF63       IntelliPort II board 0, port 63
 1309                  64 = /dev/ttyF64       IntelliPort II board 1, port 0
 1310                  65 = /dev/ttyF65       IntelliPort II board 1, port 1
 1311                     ...
 1312                 127 = /dev/ttyF127      IntelliPort II board 1, port 63
 1313                 128 = /dev/ttyF128      IntelliPort II board 2, port 0
 1314                 129 = /dev/ttyF129      IntelliPort II board 2, port 1
 1315                     ...
 1316                 191 = /dev/ttyF191      IntelliPort II board 2, port 63
 1317                 192 = /dev/ttyF192      IntelliPort II board 3, port 0
 1318                 193 = /dev/ttyF193      IntelliPort II board 3, port 1
 1319                     ...
 1320                 255 = /dev/ttyF255      IntelliPort II board 3, port 63
 1321 
 1322  71 block       SCSI disk devices (112-127)
 1323                   0 = /dev/sddi         113th SCSI disk whole disk
 1324                  16 = /dev/sddj         114th SCSI disk whole disk
 1325                  32 = /dev/sddk         115th SCSI disk whole disk
 1326                     ...
 1327                 240 = /dev/sddx         128th SCSI disk whole disk
 1328 
 1329                 Partitions are handled in the same way as for IDE
 1330                 disks (see major number 3) except that the limit on
 1331                 partitions is 15.
 1332 
 1333  72 char        Computone IntelliPort II serial card - alternate devices
 1334                   0 = /dev/cuf0         Callout device for ttyF0
 1335                   1 = /dev/cuf1         Callout device for ttyF1
 1336                     ...
 1337                  63 = /dev/cuf63        Callout device for ttyF63
 1338                  64 = /dev/cuf64        Callout device for ttyF64
 1339                  65 = /dev/cuf65        Callout device for ttyF65
 1340                     ...
 1341                 127 = /dev/cuf127       Callout device for ttyF127
 1342                 128 = /dev/cuf128       Callout device for ttyF128
 1343                 129 = /dev/cuf129       Callout device for ttyF129
 1344                     ...
 1345                 191 = /dev/cuf191       Callout device for ttyF191
 1346                 192 = /dev/cuf192       Callout device for ttyF192
 1347                 193 = /dev/cuf193       Callout device for ttyF193
 1348                     ...
 1349                 255 = /dev/cuf255       Callout device for ttyF255
 1350 
 1351  72 block       Compaq Intelligent Drive Array, first controller
 1352                   0 = /dev/ida/c0d0     First logical drive whole disk
 1353                  16 = /dev/ida/c0d1     Second logical drive whole disk
 1354                     ...
 1355                 240 = /dev/ida/c0d15    16th logical drive whole disk
 1356 
 1357                 Partitions are handled the same way as for Mylex
 1358                 DAC960 (see major number 48) except that the limit on
 1359                 partitions is 15.
 1360 
 1361  73 char        Computone IntelliPort II serial card - control devices
 1362                   0 = /dev/ip2ipl0      Loadware device for board 0
 1363                   1 = /dev/ip2stat0     Status device for board 0
 1364                   4 = /dev/ip2ipl1      Loadware device for board 1
 1365                   5 = /dev/ip2stat1     Status device for board 1
 1366                   8 = /dev/ip2ipl2      Loadware device for board 2
 1367                   9 = /dev/ip2stat2     Status device for board 2
 1368                  12 = /dev/ip2ipl3      Loadware device for board 3
 1369                  13 = /dev/ip2stat3     Status device for board 3
 1370 
 1371  73 block       Compaq Intelligent Drive Array, second controller
 1372                   0 = /dev/ida/c1d0     First logical drive whole disk
 1373                  16 = /dev/ida/c1d1     Second logical drive whole disk
 1374                     ...
 1375                 240 = /dev/ida/c1d15    16th logical drive whole disk
 1376 
 1377                 Partitions are handled the same way as for Mylex
 1378                 DAC960 (see major number 48) except that the limit on
 1379                 partitions is 15.
 1380 
 1381  74 char        SCI bridge
 1382                   0 = /dev/SCI/0        SCI device 0
 1383                   1 = /dev/SCI/1        SCI device 1
 1384                     ...
 1385 
 1386                 Currently for Dolphin Interconnect Solutions' PCI-SCI
 1387                 bridge.
 1388 
 1389  74 block       Compaq Intelligent Drive Array, third controller
 1390                   0 = /dev/ida/c2d0     First logical drive whole disk
 1391                  16 = /dev/ida/c2d1     Second logical drive whole disk
 1392                     ...
 1393                 240 = /dev/ida/c2d15    16th logical drive whole disk
 1394 
 1395                 Partitions are handled the same way as for Mylex
 1396                 DAC960 (see major number 48) except that the limit on
 1397                 partitions is 15.
 1398 
 1399  75 char        Specialix IO8+ serial card
 1400                   0 = /dev/ttyW0        First IO8+ port, first card
 1401                   1 = /dev/ttyW1        Second IO8+ port, first card
 1402                     ...
 1403                   8 = /dev/ttyW8        First IO8+ port, second card
 1404                     ...
 1405 
 1406  75 block       Compaq Intelligent Drive Array, fourth controller
 1407                   0 = /dev/ida/c3d0     First logical drive whole disk
 1408                  16 = /dev/ida/c3d1     Second logical drive whole disk
 1409                     ...
 1410                 240 = /dev/ida/c3d15    16th logical drive whole disk
 1411 
 1412                 Partitions are handled the same way as for Mylex
 1413                 DAC960 (see major number 48) except that the limit on
 1414                 partitions is 15.
 1415 
 1416  76 char        Specialix IO8+ serial card - alternate devices
 1417                   0 = /dev/cuw0         Callout device for ttyW0
 1418                   1 = /dev/cuw1         Callout device for ttyW1
 1419                     ...
 1420                   8 = /dev/cuw8         Callout device for ttyW8
 1421                     ...
 1422 
 1423  76 block       Compaq Intelligent Drive Array, fifth controller
 1424                   0 = /dev/ida/c4d0     First logical drive whole disk
 1425                  16 = /dev/ida/c4d1     Second logical drive whole disk
 1426                     ...
 1427                 240 = /dev/ida/c4d15    16th logical drive whole disk
 1428 
 1429                 Partitions are handled the same way as for Mylex
 1430                 DAC960 (see major number 48) except that the limit on
 1431                 partitions is 15.
 1432 
 1433 
 1434  77 char        ComScire Quantum Noise Generator
 1435                   0 = /dev/qng          ComScire Quantum Noise Generator
 1436 
 1437  77 block       Compaq Intelligent Drive Array, sixth controller
 1438                   0 = /dev/ida/c5d0     First logical drive whole disk
 1439                  16 = /dev/ida/c5d1     Second logical drive whole disk
 1440                     ...
 1441                 240 = /dev/ida/c5d15    16th logical drive whole disk
 1442 
 1443                 Partitions are handled the same way as for Mylex
 1444                 DAC960 (see major number 48) except that the limit on
 1445                 partitions is 15.
 1446 
 1447  78 char        PAM Software's multimodem boards
 1448                   0 = /dev/ttyM0        First PAM modem
 1449                   1 = /dev/ttyM1        Second PAM modem
 1450                     ...
 1451 
 1452  78 block       Compaq Intelligent Drive Array, seventh controller
 1453                   0 = /dev/ida/c6d0     First logical drive whole disk
 1454                  16 = /dev/ida/c6d1     Second logical drive whole disk
 1455                     ...
 1456                 240 = /dev/ida/c6d15    16th logical drive whole disk
 1457 
 1458                 Partitions are handled the same way as for Mylex
 1459                 DAC960 (see major number 48) except that the limit on
 1460                 partitions is 15.
 1461 
 1462  79 char        PAM Software's multimodem boards - alternate devices
 1463                   0 = /dev/cum0         Callout device for ttyM0
 1464                   1 = /dev/cum1         Callout device for ttyM1
 1465                     ...
 1466 
 1467  79 block       Compaq Intelligent Drive Array, eighth controller
 1468                   0 = /dev/ida/c7d0     First logical drive whole disk
 1469                  16 = /dev/ida/c7d1     Second logical drive whole disk
 1470                     ...
 1471                 240 = /dev/ida/c715     16th logical drive whole disk
 1472 
 1473                 Partitions are handled the same way as for Mylex
 1474                 DAC960 (see major number 48) except that the limit on
 1475                 partitions is 15.
 1476 
 1477  80 char        Photometrics AT200 CCD camera
 1478                   0 = /dev/at200        Photometrics AT200 CCD camera
 1479 
 1480  80 block       I2O hard disk
 1481                   0 = /dev/i2o/hda      First I2O hard disk, whole disk
 1482                  16 = /dev/i2o/hdb      Second I2O hard disk, whole disk
 1483                     ...
 1484                 240 = /dev/i2o/hdp      16th I2O hard disk, whole disk
 1485 
 1486                 Partitions are handled in the same way as for IDE
 1487                 disks (see major number 3) except that the limit on
 1488                 partitions is 15.
 1489 
 1490  81 char        video4linux
 1491                   0 = /dev/video0       Video capture/overlay device
 1492                     ...
 1493                  63 = /dev/video63      Video capture/overlay device
 1494                  64 = /dev/radio0       Radio device
 1495                     ...
 1496                 127 = /dev/radio63      Radio device
 1497                 224 = /dev/vbi0         Vertical blank interrupt
 1498                     ...
 1499                 255 = /dev/vbi31        Vertical blank interrupt
 1500 
 1501  81 block       I2O hard disk
 1502                   0 = /dev/i2o/hdq      17th I2O hard disk, whole disk
 1503                  16 = /dev/i2o/hdr      18th I2O hard disk, whole disk
 1504                     ...
 1505                 240 = /dev/i2o/hdaf     32nd I2O hard disk, whole disk
 1506 
 1507                 Partitions are handled in the same way as for IDE
 1508                 disks (see major number 3) except that the limit on
 1509                 partitions is 15.
 1510 
 1511  82 char        WiNRADiO communications receiver card
 1512                   0 = /dev/winradio0    First WiNRADiO card
 1513                   1 = /dev/winradio1    Second WiNRADiO card
 1514                     ...
 1515 
 1516                 The driver and documentation may be obtained from
 1517                 http://www.winradio.com/
 1518 
 1519  82 block       I2O hard disk
 1520                   0 = /dev/i2o/hdag     33rd I2O hard disk, whole disk
 1521                  16 = /dev/i2o/hdah     34th I2O hard disk, whole disk
 1522                     ...
 1523                 240 = /dev/i2o/hdav     48th I2O hard disk, whole disk
 1524 
 1525                 Partitions are handled in the same way as for IDE
 1526                 disks (see major number 3) except that the limit on
 1527                 partitions is 15.
 1528 
 1529  83 char        Matrox mga_vid video driver
 1530                  0 = /dev/mga_vid0      1st video card
 1531                  1 = /dev/mga_vid1      2nd video card
 1532                  2 = /dev/mga_vid2      3rd video card
 1533                   ...
 1534                 15 = /dev/mga_vid15     16th video card
 1535 
 1536  83 block       I2O hard disk
 1537                   0 = /dev/i2o/hdaw     49th I2O hard disk, whole disk
 1538                  16 = /dev/i2o/hdax     50th I2O hard disk, whole disk
 1539                     ...
 1540                 240 = /dev/i2o/hdbl     64th I2O hard disk, whole disk
 1541 
 1542                 Partitions are handled in the same way as for IDE
 1543                 disks (see major number 3) except that the limit on
 1544                 partitions is 15.
 1545 
 1546  84 char        Ikon 1011[57] Versatec Greensheet Interface
 1547                   0 = /dev/ihcp0        First Greensheet port
 1548                   1 = /dev/ihcp1        Second Greensheet port
 1549 
 1550  84 block       I2O hard disk
 1551                   0 = /dev/i2o/hdbm     65th I2O hard disk, whole disk
 1552                  16 = /dev/i2o/hdbn     66th I2O hard disk, whole disk
 1553                     ...
 1554                 240 = /dev/i2o/hdcb     80th I2O hard disk, whole disk
 1555 
 1556                 Partitions are handled in the same way as for IDE
 1557                 disks (see major number 3) except that the limit on
 1558                 partitions is 15.
 1559 
 1560  85 char        Linux/SGI shared memory input queue
 1561                   0 = /dev/shmiq        Master shared input queue
 1562                   1 = /dev/qcntl0       First device pushed
 1563                   2 = /dev/qcntl1       Second device pushed
 1564                     ...
 1565 
 1566  85 block       I2O hard disk
 1567                   0 = /dev/i2o/hdcc     81st I2O hard disk, whole disk
 1568                  16 = /dev/i2o/hdcd     82nd I2O hard disk, whole disk
 1569                     ...
 1570                 240 = /dev/i2o/hdcr     96th I2O hard disk, whole disk
 1571 
 1572                 Partitions are handled in the same way as for IDE
 1573                 disks (see major number 3) except that the limit on
 1574                 partitions is 15.
 1575 
 1576  86 char        SCSI media changer
 1577                   0 = /dev/sch0         First SCSI media changer
 1578                   1 = /dev/sch1         Second SCSI media changer
 1579                     ...
 1580 
 1581  86 block       I2O hard disk
 1582                   0 = /dev/i2o/hdcs     97th I2O hard disk, whole disk
 1583                  16 = /dev/i2o/hdct     98th I2O hard disk, whole disk
 1584                     ...
 1585                 240 = /dev/i2o/hddh     112th I2O hard disk, whole disk
 1586 
 1587                 Partitions are handled in the same way as for IDE
 1588                 disks (see major number 3) except that the limit on
 1589                 partitions is 15.
 1590 
 1591  87 char        Sony Control-A1 stereo control bus
 1592                   0 = /dev/controla0    First device on chain
 1593                   1 = /dev/controla1    Second device on chain
 1594                     ...
 1595 
 1596  87 block       I2O hard disk
 1597                   0 = /dev/i2o/hddi     113rd I2O hard disk, whole disk
 1598                  16 = /dev/i2o/hddj     114th I2O hard disk, whole disk
 1599                     ...
 1600                 240 = /dev/i2o/hddx     128th I2O hard disk, whole disk
 1601 
 1602                 Partitions are handled in the same way as for IDE
 1603                 disks (see major number 3) except that the limit on
 1604                 partitions is 15.
 1605 
 1606  88 char        COMX synchronous serial card
 1607                   0 = /dev/comx0        COMX channel 0
 1608                   1 = /dev/comx1        COMX channel 1
 1609                     ...
 1610 
 1611  88 block       Seventh IDE hard disk/CD-ROM interface
 1612                   0 = /dev/hdm          Master: whole disk (or CD-ROM)
 1613                  64 = /dev/hdn          Slave: whole disk (or CD-ROM)
 1614 
 1615                 Partitions are handled the same way as for the first
 1616                 interface (see major number 3).
 1617 
 1618  89 char        I2C bus interface
 1619                   0 = /dev/i2c-0        First I2C adapter
 1620                   1 = /dev/i2c-1        Second I2C adapter
 1621                     ...
 1622 
 1623  89 block       Eighth IDE hard disk/CD-ROM interface
 1624                   0 = /dev/hdo          Master: whole disk (or CD-ROM)
 1625                  64 = /dev/hdp          Slave: whole disk (or CD-ROM)
 1626 
 1627                 Partitions are handled the same way as for the first
 1628                 interface (see major number 3).
 1629 
 1630  90 char        Memory Technology Device (RAM, ROM, Flash)
 1631                   0 = /dev/mtd0         First MTD (rw)
 1632                   1 = /dev/mtdr0        First MTD (ro)
 1633                     ...
 1634                  30 = /dev/mtd15        16th MTD (rw)
 1635                  31 = /dev/mtdr15       16th MTD (ro)
 1636 
 1637  90 block       Ninth IDE hard disk/CD-ROM interface
 1638                   0 = /dev/hdq          Master: whole disk (or CD-ROM)
 1639                  64 = /dev/hdr          Slave: whole disk (or CD-ROM)
 1640 
 1641                 Partitions are handled the same way as for the first
 1642                 interface (see major number 3).
 1643 
 1644  91 char        CAN-Bus devices
 1645                   0 = /dev/can0         First CAN-Bus controller
 1646                   1 = /dev/can1         Second CAN-Bus controller
 1647                     ...
 1648 
 1649  91 block       Tenth IDE hard disk/CD-ROM interface
 1650                   0 = /dev/hds          Master: whole disk (or CD-ROM)
 1651                  64 = /dev/hdt          Slave: whole disk (or CD-ROM)
 1652 
 1653                 Partitions are handled the same way as for the first
 1654                 interface (see major number 3).
 1655 
 1656  92 char        Reserved for ith Kommunikationstechnik MIC ISDN card
 1657 
 1658  92 block       PPDD encrypted disk driver
 1659                   0 = /dev/ppdd0        First encrypted disk
 1660                   1 = /dev/ppdd1        Second encrypted disk
 1661                     ...
 1662 
 1663                 Partitions are handled in the same way as for IDE
 1664                 disks (see major number 3) except that the limit on
 1665                 partitions is 15.
 1666 
 1667  93 char
 1668 
 1669  93 block       NAND Flash Translation Layer filesystem
 1670                   0 = /dev/nftla        First NFTL layer
 1671                  16 = /dev/nftlb        Second NFTL layer
 1672                     ...
 1673                 240 = /dev/nftlp        16th NTFL layer
 1674 
 1675  94 char
 1676 
 1677  94 block       IBM S/390 DASD block storage
 1678                   0 = /dev/dasda First DASD device, major
 1679                   1 = /dev/dasda1 First DASD device, block 1
 1680                   2 = /dev/dasda2 First DASD device, block 2
 1681                   3 = /dev/dasda3 First DASD device, block 3
 1682                   4 = /dev/dasdb Second DASD device, major
 1683                   5 = /dev/dasdb1 Second DASD device, block 1
 1684                   6 = /dev/dasdb2 Second DASD device, block 2
 1685                   7 = /dev/dasdb3 Second DASD device, block 3
 1686                     ...
 1687 
 1688  95 char        IP filter
 1689                   0 = /dev/ipl          Filter control device/log file
 1690                   1 = /dev/ipnat        NAT control device/log file
 1691                   2 = /dev/ipstate      State information log file
 1692                   3 = /dev/ipauth       Authentication control device/log file
 1693                     ...
 1694 
 1695  96 char        Parallel port ATAPI tape devices
 1696                   0 = /dev/pt0          First parallel port ATAPI tape
 1697                   1 = /dev/pt1          Second parallel port ATAPI tape
 1698                     ...
 1699                 128 = /dev/npt0         First p.p. ATAPI tape, no rewind
 1700                 129 = /dev/npt1         Second p.p. ATAPI tape, no rewind
 1701                     ...
 1702 
 1703  96 block       Inverse NAND Flash Translation Layer
 1704                   0 = /dev/inftla First INFTL layer
 1705                  16 = /dev/inftlb Second INFTL layer
 1706                     ...
 1707                 240 = /dev/inftlp       16th INTFL layer
 1708 
 1709  97 char        Parallel port generic ATAPI interface
 1710                   0 = /dev/pg0          First parallel port ATAPI device
 1711                   1 = /dev/pg1          Second parallel port ATAPI device
 1712                   2 = /dev/pg2          Third parallel port ATAPI device
 1713                   3 = /dev/pg3          Fourth parallel port ATAPI device
 1714 
 1715                 These devices support the same API as the generic SCSI
 1716                 devices.
 1717 
 1718  98 char        Control and Measurement Device (comedi)
 1719                   0 = /dev/comedi0      First comedi device
 1720                   1 = /dev/comedi1      Second comedi device
 1721                     ...
 1722 
 1723                 See http://stm.lbl.gov/comedi.
 1724 
 1725  98 block       User-mode virtual block device
 1726                   0 = /dev/ubda         First user-mode block device
 1727                  16 = /dev/udbb         Second user-mode block device
 1728                     ...
 1729 
 1730                 Partitions are handled in the same way as for IDE
 1731                 disks (see major number 3) except that the limit on
 1732                 partitions is 15.
 1733 
 1734                 This device is used by the user-mode virtual kernel port.
 1735 
 1736  99 char        Raw parallel ports
 1737                   0 = /dev/parport0     First parallel port
 1738                   1 = /dev/parport1     Second parallel port
 1739                     ...
 1740 
 1741  99 block       JavaStation flash disk
 1742                   0 = /dev/jsfd         JavaStation flash disk
 1743 
 1744 100 char        Telephony for Linux
 1745                   0 = /dev/phone0       First telephony device
 1746                   1 = /dev/phone1       Second telephony device
 1747                     ...
 1748 
 1749 101 char        Motorola DSP 56xxx board
 1750                   0 = /dev/mdspstat     Status information
 1751                   1 = /dev/mdsp1        First DSP board I/O controls
 1752                     ...
 1753                  16 = /dev/mdsp16       16th DSP board I/O controls
 1754 
 1755 101 block       AMI HyperDisk RAID controller
 1756                   0 = /dev/amiraid/ar0  First array whole disk
 1757                  16 = /dev/amiraid/ar1  Second array whole disk
 1758                     ...
 1759                 240 = /dev/amiraid/ar15 16th array whole disk
 1760 
 1761                 For each device, partitions are added as:
 1762                   0 = /dev/amiraid/ar?    Whole disk
 1763                   1 = /dev/amiraid/ar?p1  First partition
 1764                   2 = /dev/amiraid/ar?p2  Second partition
 1765                     ...
 1766                  15 = /dev/amiraid/ar?p15 15th partition
 1767 
 1768 102 char
 1769 
 1770 102 block       Compressed block device
 1771                   0 = /dev/cbd/a        First compressed block device, whole device
 1772                  16 = /dev/cbd/b        Second compressed block device, whole device
 1773                     ...
 1774                 240 = /dev/cbd/p        16th compressed block device, whole device
 1775 
 1776                 Partitions are handled in the same way as for IDE
 1777                 disks (see major number 3) except that the limit on
 1778                 partitions is 15.
 1779 
 1780 103 char        Arla network file system
 1781                   0 = /dev/nnpfs0       First NNPFS device
 1782                   1 = /dev/nnpfs1       Second NNPFS device
 1783 
 1784                 Arla is a free clone of the Andrew File System, AFS.
 1785                 The NNPFS device gives user mode filesystem
 1786                 implementations a kernel presence for caching and easy
 1787                 mounting.  For more information about the project,
 1788                 write to <arla-drinkers@stacken.kth.se> or see
 1789                 http://www.stacken.kth.se/project/arla/
 1790 
 1791 103 block       Audit device
 1792                   0 = /dev/audit        Audit device
 1793 
 1794 104 char        Flash BIOS support
 1795 
 1796 104 block       Compaq Next Generation Drive Array, first controller
 1797                   0 = /dev/cciss/c0d0   First logical drive, whole disk
 1798                  16 = /dev/cciss/c0d1   Second logical drive, whole disk
 1799                     ...
 1800                 240 = /dev/cciss/c0d15  16th logical drive, whole disk
 1801 
 1802                 Partitions are handled the same way as for Mylex
 1803                 DAC960 (see major number 48) except that the limit on
 1804                 partitions is 15.
 1805 
 1806 105 char        Comtrol VS-1000 serial controller
 1807                   0 = /dev/ttyV0        First VS-1000 port
 1808                   1 = /dev/ttyV1        Second VS-1000 port
 1809                     ...
 1810 
 1811 105 block       Compaq Next Generation Drive Array, second controller
 1812                   0 = /dev/cciss/c1d0   First logical drive, whole disk
 1813                  16 = /dev/cciss/c1d1   Second logical drive, whole disk
 1814                     ...
 1815                 240 = /dev/cciss/c1d15  16th logical drive, whole disk
 1816 
 1817                 Partitions are handled the same way as for Mylex
 1818                 DAC960 (see major number 48) except that the limit on
 1819                 partitions is 15.
 1820 
 1821 106 char        Comtrol VS-1000 serial controller - alternate devices
 1822                   0 = /dev/cuv0         First VS-1000 port
 1823                   1 = /dev/cuv1         Second VS-1000 port
 1824                     ...
 1825 
 1826 106 block       Compaq Next Generation Drive Array, third controller
 1827                   0 = /dev/cciss/c2d0   First logical drive, whole disk
 1828                  16 = /dev/cciss/c2d1   Second logical drive, whole disk
 1829                     ...
 1830                 240 = /dev/cciss/c2d15  16th logical drive, whole disk
 1831 
 1832                 Partitions are handled the same way as for Mylex
 1833                 DAC960 (see major number 48) except that the limit on
 1834                 partitions is 15.
 1835 
 1836 107 char        3Dfx Voodoo Graphics device
 1837                   0 = /dev/3dfx         Primary 3Dfx graphics device
 1838 
 1839 107 block       Compaq Next Generation Drive Array, fourth controller
 1840                   0 = /dev/cciss/c3d0   First logical drive, whole disk
 1841                  16 = /dev/cciss/c3d1   Second logical drive, whole disk
 1842                     ...
 1843                 240 = /dev/cciss/c3d15  16th logical drive, whole disk
 1844 
 1845                 Partitions are handled the same way as for Mylex
 1846                 DAC960 (see major number 48) except that the limit on
 1847                 partitions is 15.
 1848 
 1849 108 char        Device independent PPP interface
 1850                   0 = /dev/ppp          Device independent PPP interface
 1851 
 1852 108 block       Compaq Next Generation Drive Array, fifth controller
 1853                   0 = /dev/cciss/c4d0   First logical drive, whole disk
 1854                  16 = /dev/cciss/c4d1   Second logical drive, whole disk
 1855                     ...
 1856                 240 = /dev/cciss/c4d15  16th logical drive, whole disk
 1857 
 1858                 Partitions are handled the same way as for Mylex
 1859                 DAC960 (see major number 48) except that the limit on
 1860                 partitions is 15.
 1861 
 1862 109 char        Reserved for logical volume manager
 1863 
 1864 109 block       Compaq Next Generation Drive Array, sixth controller
 1865                   0 = /dev/cciss/c5d0   First logical drive, whole disk
 1866                  16 = /dev/cciss/c5d1   Second logical drive, whole disk
 1867                     ...
 1868                 240 = /dev/cciss/c5d15  16th logical drive, whole disk
 1869 
 1870                 Partitions are handled the same way as for Mylex
 1871                 DAC960 (see major number 48) except that the limit on
 1872                 partitions is 15.
 1873 
 1874 110 char        miroMEDIA Surround board
 1875                   0 = /dev/srnd0        First miroMEDIA Surround board
 1876                   1 = /dev/srnd1        Second miroMEDIA Surround board
 1877                     ...
 1878 
 1879 110 block       Compaq Next Generation Drive Array, seventh controller
 1880                   0 = /dev/cciss/c6d0   First logical drive, whole disk
 1881                  16 = /dev/cciss/c6d1   Second logical drive, whole disk
 1882                     ...
 1883                 240 = /dev/cciss/c6d15  16th logical drive, whole disk
 1884 
 1885                 Partitions are handled the same way as for Mylex
 1886                 DAC960 (see major number 48) except that the limit on
 1887                 partitions is 15.
 1888 
 1889 111 char
 1890 
 1891 111 block       Compaq Next Generation Drive Array, eighth controller
 1892                   0 = /dev/cciss/c7d0   First logical drive, whole disk
 1893                  16 = /dev/cciss/c7d1   Second logical drive, whole disk
 1894                     ...
 1895                 240 = /dev/cciss/c7d15  16th logical drive, whole disk
 1896 
 1897                 Partitions are handled the same way as for Mylex
 1898                 DAC960 (see major number 48) except that the limit on
 1899                 partitions is 15.
 1900 
 1901 112 char        ISI serial card
 1902                   0 = /dev/ttyM0        First ISI port
 1903                   1 = /dev/ttyM1        Second ISI port
 1904                     ...
 1905 
 1906                 There is currently a device-naming conflict between
 1907                 these and PAM multimodems (major 78).
 1908 
 1909 112 block       IBM iSeries virtual disk
 1910                   0 = /dev/iseries/vda  First virtual disk, whole disk
 1911                   8 = /dev/iseries/vdb  Second virtual disk, whole disk
 1912                     ...
 1913                 200 = /dev/iseries/vdz  26th virtual disk, whole disk
 1914                 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
 1915                     ...
 1916                 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
 1917 
 1918                 Partitions are handled in the same way as for IDE
 1919                 disks (see major number 3) except that the limit on
 1920                 partitions is 7.
 1921 
 1922 113 char        ISI serial card - alternate devices
 1923                   0 = /dev/cum0         Callout device for ttyM0
 1924                   1 = /dev/cum1         Callout device for ttyM1
 1925                     ...
 1926 
 1927 113 block       IBM iSeries virtual CD-ROM
 1928                   0 = /dev/iseries/vcda First virtual CD-ROM
 1929                   1 = /dev/iseries/vcdb Second virtual CD-ROM
 1930                     ...
 1931 
 1932 114 char        Picture Elements ISE board
 1933                   0 = /dev/ise0         First ISE board
 1934                   1 = /dev/ise1         Second ISE board
 1935                     ...
 1936                 128 = /dev/isex0        Control node for first ISE board
 1937                 129 = /dev/isex1        Control node for second ISE board
 1938                     ...
 1939 
 1940                 The ISE board is an embedded computer, optimized for
 1941                 image processing. The /dev/iseN nodes are the general
 1942                 I/O access to the board, the /dev/isex0 nodes command
 1943                 nodes used to control the board.
 1944 
 1945 114 block       IDE BIOS powered software RAID interfaces such as the
 1946                 Promise Fastrak
 1947 
 1948                   0 = /dev/ataraid/d0
 1949                   1 = /dev/ataraid/d0p1
 1950                   2 = /dev/ataraid/d0p2
 1951                   ...
 1952                  16 = /dev/ataraid/d1
 1953                  17 = /dev/ataraid/d1p1
 1954                  18 = /dev/ataraid/d1p2
 1955                   ...
 1956                 255 = /dev/ataraid/d15p15
 1957 
 1958                 Partitions are handled in the same way as for IDE
 1959                 disks (see major number 3) except that the limit on
 1960                 partitions is 15.
 1961 
 1962 115 char        TI link cable devices (115 was formerly the console driver speaker)
 1963                   0 = /dev/tipar0    Parallel cable on first parallel port
 1964                   ...
 1965                   7 = /dev/tipar7    Parallel cable on seventh parallel port
 1966 
 1967                   8 = /dev/tiser0    Serial cable on first serial port
 1968                   ...
 1969                  15 = /dev/tiser7    Serial cable on seventh serial port
 1970 
 1971                  16 = /dev/tiusb0    First USB cable
 1972                   ...
 1973                  47 = /dev/tiusb31   32nd USB cable
 1974 
 1975 115 block       NetWare (NWFS) Devices (0-255)
 1976 
 1977                 The NWFS (NetWare) devices are used to present a
 1978                 collection of NetWare Mirror Groups or NetWare
 1979                 Partitions as a logical storage segment for
 1980                 use in mounting NetWare volumes.  A maximum of
 1981                 256 NetWare volumes can be supported in a single
 1982                 machine.
 1983 
 1984                 http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
 1985 
 1986                 0 = /dev/nwfs/v0    First NetWare (NWFS) Logical Volume
 1987                 1 = /dev/nwfs/v1    Second NetWare (NWFS) Logical Volume
 1988                 2 = /dev/nwfs/v2    Third NetWare (NWFS) Logical Volume
 1989                       ...
 1990                 255 = /dev/nwfs/v255    Last NetWare (NWFS) Logical Volume
 1991 
 1992 116 char        Advanced Linux Sound Driver (ALSA)
 1993 
 1994 116 block       MicroMemory battery backed RAM adapter (NVRAM)
 1995                 Supports 16 boards, 15 partitions each.
 1996                 Requested by neilb at cse.unsw.edu.au.
 1997 
 1998                  0 = /dev/umem/d0      Whole of first board
 1999                  1 = /dev/umem/d0p1    First partition of first board
 2000                  2 = /dev/umem/d0p2    Second partition of first board
 2001                 15 = /dev/umem/d0p15   15th partition of first board
 2002 
 2003                 16 = /dev/umem/d1      Whole of second board
 2004                 17 = /dev/umem/d1p1    First partition of second board
 2005                     ...
 2006                 255= /dev/umem/d15p15  15th partition of 16th board.
 2007 
 2008 117 char        COSA/SRP synchronous serial card
 2009                   0 = /dev/cosa0c0      1st board, 1st channel
 2010                   1 = /dev/cosa0c1      1st board, 2nd channel
 2011                     ...
 2012                  16 = /dev/cosa1c0      2nd board, 1st channel
 2013                  17 = /dev/cosa1c1      2nd board, 2nd channel
 2014                     ...
 2015 
 2016 117 block       Enterprise Volume Management System (EVMS)
 2017 
 2018                 The EVMS driver uses a layered, plug-in model to provide
 2019                 unparalleled flexibility and extensibility in managing
 2020                 storage.  This allows for easy expansion or customization
 2021                 of various levels of volume management.  Requested by
 2022                 Mark Peloquin (peloquin at us.ibm.com).
 2023 
 2024                 Note: EVMS populates and manages all the devnodes in
 2025                 /dev/evms.
 2026 
 2027                 http://sf.net/projects/evms
 2028 
 2029                   0 = /dev/evms/block_device   EVMS block device
 2030                   1 = /dev/evms/legacyname1    First EVMS legacy device
 2031                   2 = /dev/evms/legacyname2    Second EVMS legacy device
 2032                     ...
 2033                     Both ranges can grow (down or up) until they meet.
 2034                     ...
 2035                 254 = /dev/evms/EVMSname2      Second EVMS native device
 2036                 255 = /dev/evms/EVMSname1      First EVMS native device
 2037 
 2038                 Note: legacyname(s) are derived from the normal legacy
 2039                 device names.  For example, /dev/hda5 would become
 2040                 /dev/evms/hda5.
 2041 
 2042 118 char        IBM Cryptographic Accelerator
 2043                   0 = /dev/ica  Virtual interface to all IBM Crypto Accelerators
 2044                   1 = /dev/ica0 IBMCA Device 0
 2045                   2 = /dev/ica1 IBMCA Device 1
 2046                     ...
 2047 
 2048 119 char        VMware virtual network control
 2049                   0 = /dev/vnet0        1st virtual network
 2050                   1 = /dev/vnet1        2nd virtual network
 2051                     ...
 2052 
 2053 120-127 char    LOCAL/EXPERIMENTAL USE
 2054 
 2055 120-127 block   LOCAL/EXPERIMENTAL USE
 2056                 Allocated for local/experimental use.  For devices not
 2057                 assigned official numbers, these ranges should be
 2058                 used in order to avoid conflicting with future assignments.
 2059 
 2060 128-135 char    Unix98 PTY masters
 2061 
 2062                 These devices should not have corresponding device
 2063                 nodes; instead they should be accessed through the
 2064                 /dev/ptmx cloning interface.
 2065 
 2066 128 block       SCSI disk devices (128-143)
 2067                   0 = /dev/sddy         129th SCSI disk whole disk
 2068                  16 = /dev/sddz         130th SCSI disk whole disk
 2069                  32 = /dev/sdea         131th SCSI disk whole disk
 2070                     ...
 2071                 240 = /dev/sden         144th SCSI disk whole disk
 2072 
 2073                 Partitions are handled in the same way as for IDE
 2074                 disks (see major number 3) except that the limit on
 2075                 partitions is 15.
 2076 
 2077 129 block       SCSI disk devices (144-159)
 2078                   0 = /dev/sdeo         145th SCSI disk whole disk
 2079                  16 = /dev/sdep         146th SCSI disk whole disk
 2080                  32 = /dev/sdeq         147th SCSI disk whole disk
 2081                     ...
 2082                 240 = /dev/sdfd         160th SCSI disk whole disk
 2083 
 2084                 Partitions are handled in the same way as for IDE
 2085                 disks (see major number 3) except that the limit on
 2086                 partitions is 15.
 2087 
 2088 130 char        (Misc devices)
 2089 
 2090 130 block       SCSI disk devices (160-175)
 2091                   0 = /dev/sdfe         161st SCSI disk whole disk
 2092                  16 = /dev/sdff         162nd SCSI disk whole disk
 2093                  32 = /dev/sdfg         163rd SCSI disk whole disk
 2094                     ...
 2095                 240 = /dev/sdft         176th SCSI disk whole disk
 2096 
 2097                 Partitions are handled in the same way as for IDE
 2098                 disks (see major number 3) except that the limit on
 2099                 partitions is 15.
 2100 
 2101 131 block       SCSI disk devices (176-191)
 2102                   0 = /dev/sdfu         177th SCSI disk whole disk
 2103                  16 = /dev/sdfv         178th SCSI disk whole disk
 2104                  32 = /dev/sdfw         179th SCSI disk whole disk
 2105                     ...
 2106                 240 = /dev/sdgj         192nd SCSI disk whole disk
 2107 
 2108                 Partitions are handled in the same way as for IDE
 2109                 disks (see major number 3) except that the limit on
 2110                 partitions is 15.
 2111 
 2112 132 block       SCSI disk devices (192-207)
 2113                   0 = /dev/sdgk         193rd SCSI disk whole disk
 2114                  16 = /dev/sdgl         194th SCSI disk whole disk
 2115                  32 = /dev/sdgm         195th SCSI disk whole disk
 2116                     ...
 2117                 240 = /dev/sdgz         208th SCSI disk whole disk
 2118 
 2119                 Partitions are handled in the same way as for IDE
 2120                 disks (see major number 3) except that the limit on
 2121                 partitions is 15.
 2122 
 2123 133 block       SCSI disk devices (208-223)
 2124                   0 = /dev/sdha         209th SCSI disk whole disk
 2125                  16 = /dev/sdhb         210th SCSI disk whole disk
 2126                  32 = /dev/sdhc         211th SCSI disk whole disk
 2127                     ...
 2128                 240 = /dev/sdhp         224th SCSI disk whole disk
 2129 
 2130                 Partitions are handled in the same way as for IDE
 2131                 disks (see major number 3) except that the limit on
 2132                 partitions is 15.
 2133 
 2134 134 block       SCSI disk devices (224-239)
 2135                   0 = /dev/sdhq         225th SCSI disk whole disk
 2136                  16 = /dev/sdhr         226th SCSI disk whole disk
 2137                  32 = /dev/sdhs         227th SCSI disk whole disk
 2138                     ...
 2139                 240 = /dev/sdif         240th SCSI disk whole disk
 2140 
 2141                 Partitions are handled in the same way as for IDE
 2142                 disks (see major number 3) except that the limit on
 2143                 partitions is 15.
 2144 
 2145 135 block       SCSI disk devices (240-255)
 2146                   0 = /dev/sdig         241st SCSI disk whole disk
 2147                  16 = /dev/sdih         242nd SCSI disk whole disk
 2148                  32 = /dev/sdih         243rd SCSI disk whole disk
 2149                     ...
 2150                 240 = /dev/sdiv         256th SCSI disk whole disk
 2151 
 2152                 Partitions are handled in the same way as for IDE
 2153                 disks (see major number 3) except that the limit on
 2154                 partitions is 15.
 2155 
 2156 136-143 char    Unix98 PTY slaves
 2157                   0 = /dev/pts/0        First Unix98 pseudo-TTY
 2158                   1 = /dev/pts/1        Second Unix98 pseudo-TTY
 2159                     ...
 2160 
 2161                 These device nodes are automatically generated with
 2162                 the proper permissions and modes by mounting the
 2163                 devpts filesystem onto /dev/pts with the appropriate
 2164                 mount options (distribution dependent, however, on
 2165                 *most* distributions the appropriate options are
 2166                 "mode=0620,gid=<gid of the "tty" group>".)
 2167 
 2168 136 block       Mylex DAC960 PCI RAID controller; ninth controller
 2169                   0 = /dev/rd/c8d0      First disk, whole disk
 2170                   8 = /dev/rd/c8d1      Second disk, whole disk
 2171                     ...
 2172                 248 = /dev/rd/c8d31     32nd disk, whole disk
 2173 
 2174                 Partitions are handled as for major 48.
 2175 
 2176 137 block       Mylex DAC960 PCI RAID controller; tenth controller
 2177                   0 = /dev/rd/c9d0      First disk, whole disk
 2178                   8 = /dev/rd/c9d1      Second disk, whole disk
 2179                     ...
 2180                 248 = /dev/rd/c9d31     32nd disk, whole disk
 2181 
 2182                 Partitions are handled as for major 48.
 2183 
 2184 138 block       Mylex DAC960 PCI RAID controller; eleventh controller
 2185                   0 = /dev/rd/c10d0     First disk, whole disk
 2186                   8 = /dev/rd/c10d1     Second disk, whole disk
 2187                     ...
 2188                 248 = /dev/rd/c10d31    32nd disk, whole disk
 2189 
 2190                 Partitions are handled as for major 48.
 2191 
 2192 139 block       Mylex DAC960 PCI RAID controller; twelfth controller
 2193                   0 = /dev/rd/c11d0     First disk, whole disk
 2194                   8 = /dev/rd/c11d1     Second disk, whole disk
 2195                     ...
 2196                 248 = /dev/rd/c11d31    32nd disk, whole disk
 2197 
 2198                 Partitions are handled as for major 48.
 2199 
 2200 140 block       Mylex DAC960 PCI RAID controller; thirteenth controller
 2201                   0 = /dev/rd/c12d0     First disk, whole disk
 2202                   8 = /dev/rd/c12d1     Second disk, whole disk
 2203                     ...
 2204                 248 = /dev/rd/c12d31    32nd disk, whole disk
 2205 
 2206                 Partitions are handled as for major 48.
 2207 
 2208 141 block       Mylex DAC960 PCI RAID controller; fourteenth controller
 2209                   0 = /dev/rd/c13d0     First disk, whole disk
 2210                   8 = /dev/rd/c13d1     Second disk, whole disk
 2211                     ...
 2212                 248 = /dev/rd/c13d31    32nd disk, whole disk
 2213 
 2214                 Partitions are handled as for major 48.
 2215 
 2216 142 block       Mylex DAC960 PCI RAID controller; fifteenth controller
 2217                   0 = /dev/rd/c14d0     First disk, whole disk
 2218                   8 = /dev/rd/c14d1     Second disk, whole disk
 2219                     ...
 2220                 248 = /dev/rd/c14d31    32nd disk, whole disk
 2221 
 2222                 Partitions are handled as for major 48.
 2223 
 2224 143 block       Mylex DAC960 PCI RAID controller; sixteenth controller
 2225                   0 = /dev/rd/c15d0     First disk, whole disk
 2226                   8 = /dev/rd/c15d1     Second disk, whole disk
 2227                     ...
 2228                 248 = /dev/rd/c15d31    32nd disk, whole disk
 2229 
 2230                 Partitions are handled as for major 48.
 2231 
 2232 144 char        Encapsulated PPP
 2233                   0 = /dev/pppox0       First PPP over Ethernet
 2234                     ...
 2235                  63 = /dev/pppox63      64th PPP over Ethernet
 2236 
 2237                 This is primarily used for ADSL.
 2238 
 2239                 The SST 5136-DN DeviceNet interface driver has been
 2240                 relocated to major 183 due to an unfortunate conflict.
 2241 
 2242 144 block       Expansion Area #1 for more non-device (e.g. NFS) mounts
 2243                   0 = mounted device 256
 2244                 255 = mounted device 511
 2245 
 2246 145 char        SAM9407-based soundcard
 2247                   0 = /dev/sam0_mixer
 2248                   1 = /dev/sam0_sequencer
 2249                   2 = /dev/sam0_midi00
 2250                   3 = /dev/sam0_dsp
 2251                   4 = /dev/sam0_audio
 2252                   6 = /dev/sam0_sndstat
 2253                  18 = /dev/sam0_midi01
 2254                  34 = /dev/sam0_midi02
 2255                  50 = /dev/sam0_midi03
 2256                  64 = /dev/sam1_mixer
 2257                     ...
 2258                 128 = /dev/sam2_mixer
 2259                     ...
 2260                 192 = /dev/sam3_mixer
 2261                     ...
 2262 
 2263                 Device functions match OSS, but offer a number of
 2264                 addons, which are sam9407 specific.  OSS can be
 2265                 operated simultaneously, taking care of the codec.
 2266 
 2267 145 block       Expansion Area #2 for more non-device (e.g. NFS) mounts
 2268                   0 = mounted device 512
 2269                 255 = mounted device 767
 2270 
 2271 146 char        SYSTRAM SCRAMNet mirrored-memory network
 2272                   0 = /dev/scramnet0    First SCRAMNet device
 2273                   1 = /dev/scramnet1    Second SCRAMNet device
 2274                     ...
 2275 
 2276 146 block       Expansion Area #3 for more non-device (e.g. NFS) mounts
 2277                   0 = mounted device 768
 2278                 255 = mounted device 1023
 2279 
 2280 147 char        Aureal Semiconductor Vortex Audio device
 2281                   0 = /dev/aureal0      First Aureal Vortex
 2282                   1 = /dev/aureal1      Second Aureal Vortex
 2283                     ...
 2284 
 2285 147 block       Distributed Replicated Block Device (DRBD)
 2286                   0 = /dev/drbd0        First DRBD device
 2287                   1 = /dev/drbd1        Second DRBD device
 2288                     ...
 2289 
 2290 148 char        Technology Concepts serial card
 2291                   0 = /dev/ttyT0        First TCL port
 2292                   1 = /dev/ttyT1        Second TCL port
 2293                     ...
 2294 
 2295 149 char        Technology Concepts serial card - alternate devices
 2296                   0 = /dev/cut0         Callout device for ttyT0
 2297                   1 = /dev/cut0         Callout device for ttyT1
 2298                     ...
 2299 
 2300 150 char        Real-Time Linux FIFOs
 2301                   0 = /dev/rtf0         First RTLinux FIFO
 2302                   1 = /dev/rtf1         Second RTLinux FIFO
 2303                     ...
 2304 
 2305 151 char        DPT I2O SmartRaid V controller
 2306                   0 = /dev/dpti0        First DPT I2O adapter
 2307                   1 = /dev/dpti1        Second DPT I2O adapter
 2308                     ...
 2309 
 2310 152 char        EtherDrive Control Device
 2311                   0 = /dev/etherd/ctl   Connect/Disconnect an EtherDrive
 2312                   1 = /dev/etherd/err   Monitor errors
 2313                   2 = /dev/etherd/raw   Raw AoE packet monitor
 2314 
 2315 152 block       EtherDrive Block Devices
 2316                   0 = /dev/etherd/0     EtherDrive 0
 2317                     ...
 2318                 255 = /dev/etherd/255   EtherDrive 255
 2319 
 2320 153 char        SPI Bus Interface (sometimes referred to as MicroWire)
 2321                   0 = /dev/spi0         First SPI device on the bus
 2322                   1 = /dev/spi1         Second SPI device on the bus
 2323                     ...
 2324                  15 = /dev/spi15        Sixteenth SPI device on the bus
 2325 
 2326 153 block       Enhanced Metadisk RAID (EMD) storage units
 2327                   0 = /dev/emd/0        First unit
 2328                   1 = /dev/emd/0p1      Partition 1 on First unit
 2329                   2 = /dev/emd/0p2      Partition 2 on First unit
 2330                     ...
 2331                  15 = /dev/emd/0p15     Partition 15 on First unit
 2332 
 2333                  16 = /dev/emd/1        Second unit
 2334                  32 = /dev/emd/2        Third unit
 2335                     ...
 2336                 240 = /dev/emd/15       Sixteenth unit
 2337 
 2338                 Partitions are handled in the same way as for IDE
 2339                 disks (see major number 3) except that the limit on
 2340                 partitions is 15.
 2341 
 2342 154 char        Specialix RIO serial card
 2343                   0 = /dev/ttySR0       First RIO port
 2344                     ...
 2345                 255 = /dev/ttySR255     256th RIO port
 2346 
 2347 155 char        Specialix RIO serial card - alternate devices
 2348                   0 = /dev/cusr0        Callout device for ttySR0
 2349                     ...
 2350                 255 = /dev/cusr255      Callout device for ttySR255
 2351 
 2352 156 char        Specialix RIO serial card
 2353                   0 = /dev/ttySR256     257th RIO port
 2354                     ...
 2355                 255 = /dev/ttySR511     512th RIO port
 2356 
 2357 157 char        Specialix RIO serial card - alternate devices
 2358                   0 = /dev/cusr256      Callout device for ttySR256
 2359                     ...
 2360                 255 = /dev/cusr511      Callout device for ttySR511
 2361 
 2362 158 char        Dialogic GammaLink fax driver
 2363                   0 = /dev/gfax0        GammaLink channel 0
 2364                   1 = /dev/gfax1        GammaLink channel 1
 2365                     ...
 2366 
 2367 159 char        RESERVED
 2368 
 2369 159 block       RESERVED
 2370 
 2371 160 char        General Purpose Instrument Bus (GPIB)
 2372                   0 = /dev/gpib0        First GPIB bus
 2373                   1 = /dev/gpib1        Second GPIB bus
 2374                     ...
 2375 
 2376 160 block       Carmel 8-port SATA Disks on First Controller
 2377                   0 = /dev/carmel/0     SATA disk 0 whole disk
 2378                   1 = /dev/carmel/0p1   SATA disk 0 partition 1
 2379                     ...
 2380                  31 = /dev/carmel/0p31  SATA disk 0 partition 31
 2381 
 2382                  32 = /dev/carmel/1     SATA disk 1 whole disk
 2383                  64 = /dev/carmel/2     SATA disk 2 whole disk
 2384                     ...
 2385                 224 = /dev/carmel/7     SATA disk 7 whole disk
 2386 
 2387                 Partitions are handled in the same way as for IDE
 2388                 disks (see major number 3) except that the limit on
 2389                 partitions is 31.
 2390 
 2391 161 char        IrCOMM devices (IrDA serial/parallel emulation)
 2392                   0 = /dev/ircomm0      First IrCOMM device
 2393                   1 = /dev/ircomm1      Second IrCOMM device
 2394                     ...
 2395                  16 = /dev/irlpt0       First IrLPT device
 2396                  17 = /dev/irlpt1       Second IrLPT device
 2397                     ...
 2398 
 2399 161 block       Carmel 8-port SATA Disks on Second Controller
 2400                   0 = /dev/carmel/8     SATA disk 8 whole disk
 2401                   1 = /dev/carmel/8p1   SATA disk 8 partition 1
 2402                     ...
 2403                  31 = /dev/carmel/8p31  SATA disk 8 partition 31
 2404 
 2405                  32 = /dev/carmel/9     SATA disk 9 whole disk
 2406                  64 = /dev/carmel/10    SATA disk 10 whole disk
 2407                     ...
 2408                 224 = /dev/carmel/15    SATA disk 15 whole disk
 2409 
 2410                 Partitions are handled in the same way as for IDE
 2411                 disks (see major number 3) except that the limit on
 2412                 partitions is 31.
 2413 
 2414 162 char        Raw block device interface
 2415                   0 = /dev/rawctl       Raw I/O control device
 2416                   1 = /dev/raw/raw1     First raw I/O device
 2417                   2 = /dev/raw/raw2     Second raw I/O device
 2418                     ...
 2419                  max minor number of raw device is set by kernel config
 2420                  MAX_RAW_DEVS or raw module parameter 'max_raw_devs'
 2421 
 2422 163 char
 2423 
 2424 164 char        Chase Research AT/PCI-Fast serial card
 2425                   0 = /dev/ttyCH0       AT/PCI-Fast board 0, port 0
 2426                     ...
 2427                  15 = /dev/ttyCH15      AT/PCI-Fast board 0, port 15
 2428                  16 = /dev/ttyCH16      AT/PCI-Fast board 1, port 0
 2429                     ...
 2430                  31 = /dev/ttyCH31      AT/PCI-Fast board 1, port 15
 2431                  32 = /dev/ttyCH32      AT/PCI-Fast board 2, port 0
 2432                     ...
 2433                  47 = /dev/ttyCH47      AT/PCI-Fast board 2, port 15
 2434                  48 = /dev/ttyCH48      AT/PCI-Fast board 3, port 0
 2435                     ...
 2436                  63 = /dev/ttyCH63      AT/PCI-Fast board 3, port 15
 2437 
 2438 165 char        Chase Research AT/PCI-Fast serial card - alternate devices
 2439                   0 = /dev/cuch0        Callout device for ttyCH0
 2440                     ...
 2441                  63 = /dev/cuch63       Callout device for ttyCH63
 2442 
 2443 166 char        ACM USB modems
 2444                   0 = /dev/ttyACM0      First ACM modem
 2445                   1 = /dev/ttyACM1      Second ACM modem
 2446                     ...
 2447 
 2448 167 char        ACM USB modems - alternate devices
 2449                   0 = /dev/cuacm0       Callout device for ttyACM0
 2450                   1 = /dev/cuacm1       Callout device for ttyACM1
 2451                     ...
 2452 
 2453 168 char        Eracom CSA7000 PCI encryption adaptor
 2454                   0 = /dev/ecsa0        First CSA7000
 2455                   1 = /dev/ecsa1        Second CSA7000
 2456                     ...
 2457 
 2458 169 char        Eracom CSA8000 PCI encryption adaptor
 2459                   0 = /dev/ecsa8-0      First CSA8000
 2460                   1 = /dev/ecsa8-1      Second CSA8000
 2461                     ...
 2462 
 2463 170 char        AMI MegaRAC remote access controller
 2464                   0 = /dev/megarac0     First MegaRAC card
 2465                   1 = /dev/megarac1     Second MegaRAC card
 2466                     ...
 2467 
 2468 171 char        Reserved for IEEE 1394 (Firewire)
 2469 
 2470 172 char        Moxa Intellio serial card
 2471                   0 = /dev/ttyMX0       First Moxa port
 2472                   1 = /dev/ttyMX1       Second Moxa port
 2473                     ...
 2474                 127 = /dev/ttyMX127     128th Moxa port
 2475                 128 = /dev/moxactl      Moxa control port
 2476 
 2477 173 char        Moxa Intellio serial card - alternate devices
 2478                   0 = /dev/cumx0        Callout device for ttyMX0
 2479                   1 = /dev/cumx1        Callout device for ttyMX1
 2480                     ...
 2481                 127 = /dev/cumx127      Callout device for ttyMX127
 2482 
 2483 174 char        SmartIO serial card
 2484                   0 = /dev/ttySI0       First SmartIO port
 2485                   1 = /dev/ttySI1       Second SmartIO port
 2486                     ...
 2487 
 2488 175 char        SmartIO serial card - alternate devices
 2489                   0 = /dev/cusi0        Callout device for ttySI0
 2490                   1 = /dev/cusi1        Callout device for ttySI1
 2491                     ...
 2492 
 2493 176 char        nCipher nFast PCI crypto accelerator
 2494                   0 = /dev/nfastpci0    First nFast PCI device
 2495                   1 = /dev/nfastpci1    First nFast PCI device
 2496                     ...
 2497 
 2498 177 char        TI PCILynx memory spaces
 2499                   0 = /dev/pcilynx/aux0  AUX space of first PCILynx card
 2500                     ...
 2501                  15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
 2502                  16 = /dev/pcilynx/rom0  ROM space of first PCILynx card
 2503                     ...
 2504                  31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
 2505                  32 = /dev/pcilynx/ram0  RAM space of first PCILynx card
 2506                     ...
 2507                  47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
 2508 
 2509 178 char        Giganet cLAN1xxx virtual interface adapter
 2510                   0 = /dev/clanvi0      First cLAN adapter
 2511                   1 = /dev/clanvi1      Second cLAN adapter
 2512                     ...
 2513 
 2514 179 block       MMC block devices
 2515                   0 = /dev/mmcblk0      First SD/MMC card
 2516                   1 = /dev/mmcblk0p1    First partition on first MMC card
 2517                   8 = /dev/mmcblk1      Second SD/MMC card
 2518                     ...
 2519 
 2520                 The start of next SD/MMC card can be configured with
 2521                 CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
 2522                 time using the mmcblk.perdev_minors option. That would
 2523                 bump the offset between each card to be the configured
 2524                 value instead of the default 8.
 2525 
 2526 179 char        CCube DVXChip-based PCI products
 2527                   0 = /dev/dvxirq0      First DVX device
 2528                   1 = /dev/dvxirq1      Second DVX device
 2529                     ...
 2530 
 2531 180 char        USB devices
 2532                   0 = /dev/usb/lp0      First USB printer
 2533                     ...
 2534                  15 = /dev/usb/lp15     16th USB printer
 2535                  48 = /dev/usb/scanner0 First USB scanner
 2536                     ...
 2537                  63 = /dev/usb/scanner15 16th USB scanner
 2538                  64 = /dev/usb/rio500   Diamond Rio 500
 2539                  65 = /dev/usb/usblcd   USBLCD Interface (info@usblcd.de)
 2540                  66 = /dev/usb/cpad0    Synaptics cPad (mouse/LCD)
 2541                  96 = /dev/usb/hiddev0  1st USB HID device
 2542                     ...
 2543                 111 = /dev/usb/hiddev15 16th USB HID device
 2544                 112 = /dev/usb/auer0    1st auerswald ISDN device
 2545                     ...
 2546                 127 = /dev/usb/auer15   16th auerswald ISDN device
 2547                 128 = /dev/usb/brlvgr0  First Braille Voyager device
 2548                     ...
 2549                 131 = /dev/usb/brlvgr3  Fourth Braille Voyager device
 2550                 132 = /dev/usb/idmouse  ID Mouse (fingerprint scanner) device
 2551                 133 = /dev/usb/sisusbvga1       First SiSUSB VGA device
 2552                     ...
 2553                 140 = /dev/usb/sisusbvga8       Eighth SISUSB VGA device
 2554                 144 = /dev/usb/lcd      USB LCD device
 2555                 160 = /dev/usb/legousbtower0    1st USB Legotower device
 2556                     ...
 2557                 175 = /dev/usb/legousbtower15   16th USB Legotower device
 2558                 176 = /dev/usb/usbtmc1  First USB TMC device
 2559                    ...
 2560                 191 = /dev/usb/usbtmc16 16th USB TMC device
 2561                 192 = /dev/usb/yurex1   First USB Yurex device
 2562                    ...
 2563                 209 = /dev/usb/yurex16  16th USB Yurex device
 2564 
 2565 180 block       USB block devices
 2566                   0 = /dev/uba          First USB block device
 2567                   8 = /dev/ubb          Second USB block device
 2568                  16 = /dev/ubc          Third USB block device
 2569                     ...
 2570 
 2571 181 char        Conrad Electronic parallel port radio clocks
 2572                   0 = /dev/pcfclock0    First Conrad radio clock
 2573                   1 = /dev/pcfclock1    Second Conrad radio clock
 2574                     ...
 2575 
 2576 182 char        Picture Elements THR2 binarizer
 2577                   0 = /dev/pethr0       First THR2 board
 2578                   1 = /dev/pethr1       Second THR2 board
 2579                     ...
 2580 
 2581 183 char        SST 5136-DN DeviceNet interface
 2582                   0 = /dev/ss5136dn0    First DeviceNet interface
 2583                   1 = /dev/ss5136dn1    Second DeviceNet interface
 2584                     ...
 2585 
 2586                 This device used to be assigned to major number 144.
 2587                 It had to be moved due to an unfortunate conflict.
 2588 
 2589 184 char        Picture Elements' video simulator/sender
 2590                   0 = /dev/pevss0       First sender board
 2591                   1 = /dev/pevss1       Second sender board
 2592                     ...
 2593 
 2594 185 char        InterMezzo high availability file system
 2595                   0 = /dev/intermezzo0  First cache manager
 2596                   1 = /dev/intermezzo1  Second cache manager
 2597                     ...
 2598 
 2599                 See http://web.archive.org/web/20080115195241/
 2600                 http://inter-mezzo.org/index.html
 2601 
 2602 186 char        Object-based storage control device
 2603                   0 = /dev/obd0         First obd control device
 2604                   1 = /dev/obd1         Second obd control device
 2605                     ...
 2606 
 2607                 See ftp://ftp.lustre.org/pub/obd for code and information.
 2608 
 2609 187 char        DESkey hardware encryption device
 2610                   0 = /dev/deskey0      First DES key
 2611                   1 = /dev/deskey1      Second DES key
 2612                     ...
 2613 
 2614 188 char        USB serial converters
 2615                   0 = /dev/ttyUSB0      First USB serial converter
 2616                   1 = /dev/ttyUSB1      Second USB serial converter
 2617                     ...
 2618 
 2619 189 char        USB serial converters - alternate devices
 2620                   0 = /dev/cuusb0       Callout device for ttyUSB0
 2621                   1 = /dev/cuusb1       Callout device for ttyUSB1
 2622                     ...
 2623 
 2624 190 char        Kansas City tracker/tuner card
 2625                   0 = /dev/kctt0        First KCT/T card
 2626                   1 = /dev/kctt1        Second KCT/T card
 2627                     ...
 2628 
 2629 191 char        Reserved for PCMCIA
 2630 
 2631 192 char        Kernel profiling interface
 2632                   0 = /dev/profile      Profiling control device
 2633                   1 = /dev/profile0     Profiling device for CPU 0
 2634                   2 = /dev/profile1     Profiling device for CPU 1
 2635                     ...
 2636 
 2637 193 char        Kernel event-tracing interface
 2638                   0 = /dev/trace        Tracing control device
 2639                   1 = /dev/trace0       Tracing device for CPU 0
 2640                   2 = /dev/trace1       Tracing device for CPU 1
 2641                     ...
 2642 
 2643 194 char        linVideoStreams (LINVS)
 2644                   0 = /dev/mvideo/status0       Video compression status
 2645                   1 = /dev/mvideo/stream0       Video stream
 2646                   2 = /dev/mvideo/frame0        Single compressed frame
 2647                   3 = /dev/mvideo/rawframe0     Raw uncompressed frame
 2648                   4 = /dev/mvideo/codec0        Direct codec access
 2649                   5 = /dev/mvideo/video4linux0  Video4Linux compatibility
 2650 
 2651                  16 = /dev/mvideo/status1       Second device
 2652                     ...
 2653                  32 = /dev/mvideo/status2       Third device
 2654                     ...
 2655                     ...
 2656                 240 = /dev/mvideo/status15      16th device
 2657                     ...
 2658 
 2659 195 char        Nvidia graphics devices
 2660                   0 = /dev/nvidia0              First Nvidia card
 2661                   1 = /dev/nvidia1              Second Nvidia card
 2662                     ...
 2663                 255 = /dev/nvidiactl            Nvidia card control device
 2664 
 2665 196 char        Tormenta T1 card
 2666                   0 = /dev/tor/0                Master control channel for all cards
 2667                   1 = /dev/tor/1                First DS0
 2668                   2 = /dev/tor/2                Second DS0
 2669                     ...
 2670                  48 = /dev/tor/48               48th DS0
 2671                  49 = /dev/tor/49               First pseudo-channel
 2672                  50 = /dev/tor/50               Second pseudo-channel
 2673                     ...
 2674 
 2675 197 char        OpenTNF tracing facility
 2676                   0 = /dev/tnf/t0               Trace 0 data extraction
 2677                   1 = /dev/tnf/t1               Trace 1 data extraction
 2678                     ...
 2679                 128 = /dev/tnf/status           Tracing facility status
 2680                 130 = /dev/tnf/trace            Tracing device
 2681 
 2682 198 char        Total Impact TPMP2 quad coprocessor PCI card
 2683                   0 = /dev/tpmp2/0              First card
 2684                   1 = /dev/tpmp2/1              Second card
 2685                     ...
 2686 
 2687 199 char        Veritas volume manager (VxVM) volumes
 2688                   0 = /dev/vx/rdsk/*/*          First volume
 2689                   1 = /dev/vx/rdsk/*/*          Second volume
 2690                     ...
 2691 
 2692 199 block       Veritas volume manager (VxVM) volumes
 2693                   0 = /dev/vx/dsk/*/*           First volume
 2694                   1 = /dev/vx/dsk/*/*           Second volume
 2695                     ...
 2696 
 2697                 The namespace in these directories is maintained by
 2698                 the user space VxVM software.
 2699 
 2700 200 char        Veritas VxVM configuration interface
 2701                   0 = /dev/vx/config            Configuration access node
 2702                   1 = /dev/vx/trace             Volume i/o trace access node
 2703                   2 = /dev/vx/iod               Volume i/o daemon access node
 2704                   3 = /dev/vx/info              Volume information access node
 2705                   4 = /dev/vx/task              Volume tasks access node
 2706                   5 = /dev/vx/taskmon           Volume tasks monitor daemon
 2707 
 2708 201 char        Veritas VxVM dynamic multipathing driver
 2709                   0 = /dev/vx/rdmp/*            First multipath device
 2710                   1 = /dev/vx/rdmp/*            Second multipath device
 2711                     ...
 2712 201 block       Veritas VxVM dynamic multipathing driver
 2713                   0 = /dev/vx/dmp/*             First multipath device
 2714                   1 = /dev/vx/dmp/*             Second multipath device
 2715                     ...
 2716 
 2717                 The namespace in these directories is maintained by
 2718                 the user space VxVM software.
 2719 
 2720 202 char        CPU model-specific registers
 2721                   0 = /dev/cpu/0/msr            MSRs on CPU 0
 2722                   1 = /dev/cpu/1/msr            MSRs on CPU 1
 2723                     ...
 2724 
 2725 202 block       Xen Virtual Block Device
 2726                   0 = /dev/xvda       First Xen VBD whole disk
 2727                   16 = /dev/xvdb      Second Xen VBD whole disk
 2728                   32 = /dev/xvdc      Third Xen VBD whole disk
 2729                     ...
 2730                   240 = /dev/xvdp     Sixteenth Xen VBD whole disk
 2731 
 2732                 Partitions are handled in the same way as for IDE
 2733                 disks (see major number 3) except that the limit on
 2734                 partitions is 15.
 2735 
 2736 203 char        CPU CPUID information
 2737                   0 = /dev/cpu/0/cpuid          CPUID on CPU 0
 2738                   1 = /dev/cpu/1/cpuid          CPUID on CPU 1
 2739                     ...
 2740 
 2741 204 char        Low-density serial ports
 2742                   0 = /dev/ttyLU0               LinkUp Systems L72xx UART - port 0
 2743                   1 = /dev/ttyLU1               LinkUp Systems L72xx UART - port 1
 2744                   2 = /dev/ttyLU2               LinkUp Systems L72xx UART - port 2
 2745                   3 = /dev/ttyLU3               LinkUp Systems L72xx UART - port 3
 2746                   4 = /dev/ttyFB0               Intel Footbridge (ARM)
 2747                   5 = /dev/ttySA0               StrongARM builtin serial port 0
 2748                   6 = /dev/ttySA1               StrongARM builtin serial port 1
 2749                   7 = /dev/ttySA2               StrongARM builtin serial port 2
 2750                   8 = /dev/ttySC0               SCI serial port (SuperH) - port 0
 2751                   9 = /dev/ttySC1               SCI serial port (SuperH) - port 1
 2752                  10 = /dev/ttySC2               SCI serial port (SuperH) - port 2
 2753                  11 = /dev/ttySC3               SCI serial port (SuperH) - port 3
 2754                  12 = /dev/ttyFW0               Firmware console - port 0
 2755                  13 = /dev/ttyFW1               Firmware console - port 1
 2756                  14 = /dev/ttyFW2               Firmware console - port 2
 2757                  15 = /dev/ttyFW3               Firmware console - port 3
 2758                  16 = /dev/ttyAM0               ARM "AMBA" serial port 0
 2759                     ...
 2760                  31 = /dev/ttyAM15              ARM "AMBA" serial port 15
 2761                  32 = /dev/ttyDB0               DataBooster serial port 0
 2762                     ...
 2763                  39 = /dev/ttyDB7               DataBooster serial port 7
 2764                  40 = /dev/ttySG0               SGI Altix console port
 2765                  41 = /dev/ttySMX0              Motorola i.MX - port 0
 2766                  42 = /dev/ttySMX1              Motorola i.MX - port 1
 2767                  43 = /dev/ttySMX2              Motorola i.MX - port 2
 2768                  44 = /dev/ttyMM0               Marvell MPSC - port 0
 2769                  45 = /dev/ttyMM1               Marvell MPSC - port 1
 2770                  46 = /dev/ttyCPM0              PPC CPM (SCC or SMC) - port 0
 2771                     ...
 2772                  47 = /dev/ttyCPM5              PPC CPM (SCC or SMC) - port 5
 2773                  50 = /dev/ttyIOC0              Altix serial card
 2774                     ...
 2775                  81 = /dev/ttyIOC31             Altix serial card
 2776                  82 = /dev/ttyVR0               NEC VR4100 series SIU
 2777                  83 = /dev/ttyVR1               NEC VR4100 series DSIU
 2778                  84 = /dev/ttyIOC84             Altix ioc4 serial card
 2779                     ...
 2780                  115 = /dev/ttyIOC115           Altix ioc4 serial card
 2781                  116 = /dev/ttySIOC0            Altix ioc3 serial card
 2782                     ...
 2783                  147 = /dev/ttySIOC31           Altix ioc3 serial card
 2784                  148 = /dev/ttyPSC0             PPC PSC - port 0
 2785                     ...
 2786                  153 = /dev/ttyPSC5             PPC PSC - port 5
 2787                  154 = /dev/ttyAT0              ATMEL serial port 0
 2788                     ...
 2789                  169 = /dev/ttyAT15             ATMEL serial port 15
 2790                  170 = /dev/ttyNX0              Hilscher netX serial port 0
 2791                     ...
 2792                  185 = /dev/ttyNX15             Hilscher netX serial port 15
 2793                  186 = /dev/ttyJ0               JTAG1 DCC protocol based serial port emulation
 2794                  187 = /dev/ttyUL0              Xilinx uartlite - port 0
 2795                     ...
 2796                  190 = /dev/ttyUL3              Xilinx uartlite - port 3
 2797                  191 = /dev/xvc0                Xen virtual console - port 0
 2798                  192 = /dev/ttyPZ0              pmac_zilog - port 0
 2799                     ...
 2800                  195 = /dev/ttyPZ3              pmac_zilog - port 3
 2801                  196 = /dev/ttyTX0              TX39/49 serial port 0
 2802                     ...
 2803                  204 = /dev/ttyTX7              TX39/49 serial port 7
 2804                  205 = /dev/ttySC0              SC26xx serial port 0
 2805                  206 = /dev/ttySC1              SC26xx serial port 1
 2806                  207 = /dev/ttySC2              SC26xx serial port 2
 2807                  208 = /dev/ttySC3              SC26xx serial port 3
 2808                  209 = /dev/ttyMAX0             MAX3100 serial port 0
 2809                  210 = /dev/ttyMAX1             MAX3100 serial port 1
 2810                  211 = /dev/ttyMAX2             MAX3100 serial port 2
 2811                  212 = /dev/ttyMAX3             MAX3100 serial port 3
 2812 
 2813 205 char        Low-density serial ports (alternate device)
 2814                   0 = /dev/culu0                Callout device for ttyLU0
 2815                   1 = /dev/culu1                Callout device for ttyLU1
 2816                   2 = /dev/culu2                Callout device for ttyLU2
 2817                   3 = /dev/culu3                Callout device for ttyLU3
 2818                   4 = /dev/cufb0                Callout device for ttyFB0
 2819                   5 = /dev/cusa0                Callout device for ttySA0
 2820                   6 = /dev/cusa1                Callout device for ttySA1
 2821                   7 = /dev/cusa2                Callout device for ttySA2
 2822                   8 = /dev/cusc0                Callout device for ttySC0
 2823                   9 = /dev/cusc1                Callout device for ttySC1
 2824                  10 = /dev/cusc2                Callout device for ttySC2
 2825                  11 = /dev/cusc3                Callout device for ttySC3
 2826                  12 = /dev/cufw0                Callout device for ttyFW0
 2827                  13 = /dev/cufw1                Callout device for ttyFW1
 2828                  14 = /dev/cufw2                Callout device for ttyFW2
 2829                  15 = /dev/cufw3                Callout device for ttyFW3
 2830                  16 = /dev/cuam0                Callout device for ttyAM0
 2831                     ...
 2832                  31 = /dev/cuam15               Callout device for ttyAM15
 2833                  32 = /dev/cudb0                Callout device for ttyDB0
 2834                     ...
 2835                  39 = /dev/cudb7                Callout device for ttyDB7
 2836                  40 = /dev/cusg0                Callout device for ttySG0
 2837                  41 = /dev/ttycusmx0            Callout device for ttySMX0
 2838                  42 = /dev/ttycusmx1            Callout device for ttySMX1
 2839                  43 = /dev/ttycusmx2            Callout device for ttySMX2
 2840                  46 = /dev/cucpm0               Callout device for ttyCPM0
 2841                     ...
 2842                  49 = /dev/cucpm5               Callout device for ttyCPM5
 2843                  50 = /dev/cuioc40              Callout device for ttyIOC40
 2844                     ...
 2845                  81 = /dev/cuioc431             Callout device for ttyIOC431
 2846                  82 = /dev/cuvr0                Callout device for ttyVR0
 2847                  83 = /dev/cuvr1                Callout device for ttyVR1
 2848 
 2849 206 char        OnStream SC-x0 tape devices
 2850                   0 = /dev/osst0                First OnStream SCSI tape, mode 0
 2851                   1 = /dev/osst1                Second OnStream SCSI tape, mode 0
 2852                     ...
 2853                  32 = /dev/osst0l               First OnStream SCSI tape, mode 1
 2854                  33 = /dev/osst1l               Second OnStream SCSI tape, mode 1
 2855                     ...
 2856                  64 = /dev/osst0m               First OnStream SCSI tape, mode 2
 2857                  65 = /dev/osst1m               Second OnStream SCSI tape, mode 2
 2858                     ...
 2859                  96 = /dev/osst0a               First OnStream SCSI tape, mode 3
 2860                  97 = /dev/osst1a               Second OnStream SCSI tape, mode 3
 2861                     ...
 2862                 128 = /dev/nosst0               No rewind version of /dev/osst0
 2863                 129 = /dev/nosst1               No rewind version of /dev/osst1
 2864                     ...
 2865                 160 = /dev/nosst0l              No rewind version of /dev/osst0l
 2866                 161 = /dev/nosst1l              No rewind version of /dev/osst1l
 2867                     ...
 2868                 192 = /dev/nosst0m              No rewind version of /dev/osst0m
 2869                 193 = /dev/nosst1m              No rewind version of /dev/osst1m
 2870                     ...
 2871                 224 = /dev/nosst0a              No rewind version of /dev/osst0a
 2872                 225 = /dev/nosst1a              No rewind version of /dev/osst1a
 2873                     ...
 2874 
 2875                 The OnStream SC-x0 SCSI tapes do not support the
 2876                 standard SCSI SASD command set and therefore need
 2877                 their own driver "osst". Note that the IDE, USB (and
 2878                 maybe ParPort) versions may be driven via ide-scsi or
 2879                 usb-storage SCSI emulation and this osst device and
 2880                 driver as well.  The ADR-x0 drives are QIC-157
 2881                 compliant and don't need osst.
 2882 
 2883 207 char        Compaq ProLiant health feature indicate
 2884                   0 = /dev/cpqhealth/cpqw       Redirector interface
 2885                   1 = /dev/cpqhealth/crom       EISA CROM
 2886                   2 = /dev/cpqhealth/cdt        Data Table
 2887                   3 = /dev/cpqhealth/cevt       Event Log
 2888                   4 = /dev/cpqhealth/casr       Automatic Server Recovery
 2889                   5 = /dev/cpqhealth/cecc       ECC Memory
 2890                   6 = /dev/cpqhealth/cmca       Machine Check Architecture
 2891                   7 = /dev/cpqhealth/ccsm       Deprecated CDT
 2892                   8 = /dev/cpqhealth/cnmi       NMI Handling
 2893                   9 = /dev/cpqhealth/css        Sideshow Management
 2894                  10 = /dev/cpqhealth/cram       CMOS interface
 2895                  11 = /dev/cpqhealth/cpci       PCI IRQ interface
 2896 
 2897 208 char        User space serial ports
 2898                   0 = /dev/ttyU0                First user space serial port
 2899                   1 = /dev/ttyU1                Second user space serial port
 2900                     ...
 2901 
 2902 209 char        User space serial ports (alternate devices)
 2903                   0 = /dev/cuu0                 Callout device for ttyU0
 2904                   1 = /dev/cuu1                 Callout device for ttyU1
 2905                     ...
 2906 
 2907 210 char        SBE, Inc. sync/async serial card
 2908                   0 = /dev/sbei/wxcfg0          Configuration device for board 0
 2909                   1 = /dev/sbei/dld0            Download device for board 0
 2910                   2 = /dev/sbei/wan00           WAN device, port 0, board 0
 2911                   3 = /dev/sbei/wan01           WAN device, port 1, board 0
 2912                   4 = /dev/sbei/wan02           WAN device, port 2, board 0
 2913                   5 = /dev/sbei/wan03           WAN device, port 3, board 0
 2914                   6 = /dev/sbei/wanc00          WAN clone device, port 0, board 0
 2915                   7 = /dev/sbei/wanc01          WAN clone device, port 1, board 0
 2916                   8 = /dev/sbei/wanc02          WAN clone device, port 2, board 0
 2917                   9 = /dev/sbei/wanc03          WAN clone device, port 3, board 0
 2918                  10 = /dev/sbei/wxcfg1          Configuration device for board 1
 2919                  11 = /dev/sbei/dld1            Download device for board 1
 2920                  12 = /dev/sbei/wan10           WAN device, port 0, board 1
 2921                  13 = /dev/sbei/wan11           WAN device, port 1, board 1
 2922                  14 = /dev/sbei/wan12           WAN device, port 2, board 1
 2923                  15 = /dev/sbei/wan13           WAN device, port 3, board 1
 2924                  16 = /dev/sbei/wanc10          WAN clone device, port 0, board 1
 2925                  17 = /dev/sbei/wanc11          WAN clone device, port 1, board 1
 2926                  18 = /dev/sbei/wanc12          WAN clone device, port 2, board 1
 2927                  19 = /dev/sbei/wanc13          WAN clone device, port 3, board 1
 2928                     ...
 2929 
 2930                 Yes, each board is really spaced 10 (decimal) apart.
 2931 
 2932 211 char        Addinum CPCI1500 digital I/O card
 2933                   0 = /dev/addinum/cpci1500/0   First CPCI1500 card
 2934                   1 = /dev/addinum/cpci1500/1   Second CPCI1500 card
 2935                     ...
 2936 
 2937 212 char        LinuxTV.org DVB driver subsystem
 2938                   0 = /dev/dvb/adapter0/video0    first video decoder of first card
 2939                   1 = /dev/dvb/adapter0/audio0    first audio decoder of first card
 2940                   2 = /dev/dvb/adapter0/sec0      (obsolete/unused)
 2941                   3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
 2942                   4 = /dev/dvb/adapter0/demux0    first demux device of first card
 2943                   5 = /dev/dvb/adapter0/dvr0      first digital video recoder device of first card
 2944                   6 = /dev/dvb/adapter0/ca0       first common access port of first card
 2945                   7 = /dev/dvb/adapter0/net0      first network device of first card
 2946                   8 = /dev/dvb/adapter0/osd0      first on-screen-display device of first card
 2947                   9 = /dev/dvb/adapter0/video1    second video decoder of first card
 2948                     ...
 2949                  64 = /dev/dvb/adapter1/video0    first video decoder of second card
 2950                     ...
 2951                 128 = /dev/dvb/adapter2/video0    first video decoder of third card
 2952                     ...
 2953                 196 = /dev/dvb/adapter3/video0    first video decoder of fourth card
 2954 
 2955 216 char        Bluetooth RFCOMM TTY devices
 2956                   0 = /dev/rfcomm0              First Bluetooth RFCOMM TTY device
 2957                   1 = /dev/rfcomm1              Second Bluetooth RFCOMM TTY device
 2958                     ...
 2959 
 2960 217 char        Bluetooth RFCOMM TTY devices (alternate devices)
 2961                   0 = /dev/curf0                Callout device for rfcomm0
 2962                   1 = /dev/curf1                Callout device for rfcomm1
 2963                     ...
 2964 
 2965 218 char        The Logical Company bus Unibus/Qbus adapters
 2966                   0 = /dev/logicalco/bci/0      First bus adapter
 2967                   1 = /dev/logicalco/bci/1      First bus adapter
 2968                     ...
 2969 
 2970 219 char        The Logical Company DCI-1300 digital I/O card
 2971                   0 = /dev/logicalco/dci1300/0  First DCI-1300 card
 2972                   1 = /dev/logicalco/dci1300/1  Second DCI-1300 card
 2973                     ...
 2974 
 2975 220 char        Myricom Myrinet "GM" board
 2976                   0 = /dev/myricom/gm0          First Myrinet GM board
 2977                   1 = /dev/myricom/gmp0         First board "root access"
 2978                   2 = /dev/myricom/gm1          Second Myrinet GM board
 2979                   3 = /dev/myricom/gmp1         Second board "root access"
 2980                     ...
 2981 
 2982 221 char        VME bus
 2983                   0 = /dev/bus/vme/m0           First master image
 2984                   1 = /dev/bus/vme/m1           Second master image
 2985                   2 = /dev/bus/vme/m2           Third master image
 2986                   3 = /dev/bus/vme/m3           Fourth master image
 2987                   4 = /dev/bus/vme/s0           First slave image
 2988                   5 = /dev/bus/vme/s1           Second slave image
 2989                   6 = /dev/bus/vme/s2           Third slave image
 2990                   7 = /dev/bus/vme/s3           Fourth slave image
 2991                   8 = /dev/bus/vme/ctl          Control
 2992 
 2993                 It is expected that all VME bus drivers will use the
 2994                 same interface.  For interface documentation see
 2995                 http://www.vmelinux.org/.
 2996 
 2997 224 char        A2232 serial card
 2998                   0 = /dev/ttyY0                First A2232 port
 2999                   1 = /dev/ttyY1                Second A2232 port
 3000                     ...
 3001 
 3002 225 char        A2232 serial card (alternate devices)
 3003                   0 = /dev/cuy0                 Callout device for ttyY0
 3004                   1 = /dev/cuy1                 Callout device for ttyY1
 3005                     ...
 3006 
 3007 226 char        Direct Rendering Infrastructure (DRI)
 3008                   0 = /dev/dri/card0            First graphics card
 3009                   1 = /dev/dri/card1            Second graphics card
 3010                     ...
 3011 
 3012 227 char        IBM 3270 terminal Unix tty access
 3013                   1 = /dev/3270/tty1            First 3270 terminal
 3014                   2 = /dev/3270/tty2            Seconds 3270 terminal
 3015                     ...
 3016 
 3017 228 char        IBM 3270 terminal block-mode access
 3018                   0 = /dev/3270/tub             Controlling interface
 3019                   1 = /dev/3270/tub1            First 3270 terminal
 3020                   2 = /dev/3270/tub2            Second 3270 terminal
 3021                     ...
 3022 
 3023 229 char        IBM iSeries/pSeries virtual console
 3024                   0 = /dev/hvc0                 First console port
 3025                   1 = /dev/hvc1                 Second console port
 3026                     ...
 3027 
 3028 230 char        IBM iSeries virtual tape
 3029                   0 = /dev/iseries/vt0          First virtual tape, mode 0
 3030                   1 = /dev/iseries/vt1          Second virtual tape, mode 0
 3031                     ...
 3032                  32 = /dev/iseries/vt0l         First virtual tape, mode 1
 3033                  33 = /dev/iseries/vt1l         Second virtual tape, mode 1
 3034                     ...
 3035                  64 = /dev/iseries/vt0m         First virtual tape, mode 2
 3036                  65 = /dev/iseries/vt1m         Second virtual tape, mode 2
 3037                     ...
 3038                  96 = /dev/iseries/vt0a         First virtual tape, mode 3
 3039                  97 = /dev/iseries/vt1a         Second virtual tape, mode 3
 3040                       ...
 3041                 128 = /dev/iseries/nvt0         First virtual tape, mode 0, no rewind
 3042                 129 = /dev/iseries/nvt1         Second virtual tape, mode 0, no rewind
 3043                     ...
 3044                 160 = /dev/iseries/nvt0l        First virtual tape, mode 1, no rewind
 3045                 161 = /dev/iseries/nvt1l        Second virtual tape, mode 1, no rewind
 3046                     ...
 3047                 192 = /dev/iseries/nvt0m        First virtual tape, mode 2, no rewind
 3048                 193 = /dev/iseries/nvt1m        Second virtual tape, mode 2, no rewind
 3049                     ...
 3050                 224 = /dev/iseries/nvt0a        First virtual tape, mode 3, no rewind
 3051                 225 = /dev/iseries/nvt1a        Second virtual tape, mode 3, no rewind
 3052                     ...
 3053 
 3054                 "No rewind" refers to the omission of the default
 3055                 automatic rewind on device close.  The MTREW or MTOFFL
 3056                 ioctl()'s can be used to rewind the tape regardless of
 3057                 the device used to access it.
 3058 
 3059 231 char        InfiniBand
 3060                 0 = /dev/infiniband/umad0
 3061                 1 = /dev/infiniband/umad1
 3062                   ...
 3063                 63 = /dev/infiniband/umad63    63rd InfiniBandMad device
 3064                 64 = /dev/infiniband/issm0     First InfiniBand IsSM device
 3065                 65 = /dev/infiniband/issm1     Second InfiniBand IsSM device
 3066                   ...
 3067                 127 = /dev/infiniband/issm63    63rd InfiniBand IsSM device
 3068                 128 = /dev/infiniband/uverbs0   First InfiniBand verbs device
 3069                 129 = /dev/infiniband/uverbs1   Second InfiniBand verbs device
 3070                   ...
 3071                 159 = /dev/infiniband/uverbs31  31st InfiniBand verbs device
 3072 
 3073 232 char        Biometric Devices
 3074                 0 = /dev/biometric/sensor0/fingerprint  first fingerprint sensor on first device
 3075                 1 = /dev/biometric/sensor0/iris         first iris sensor on first device
 3076                 2 = /dev/biometric/sensor0/retina       first retina sensor on first device
 3077                 3 = /dev/biometric/sensor0/voiceprint   first voiceprint sensor on first device
 3078                 4 = /dev/biometric/sensor0/facial       first facial sensor on first device
 3079                 5 = /dev/biometric/sensor0/hand         first hand sensor on first device
 3080                   ...
 3081                 10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
 3082                   ...
 3083                 20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
 3084                   ...
 3085 
 3086 233 char        PathScale InfiniPath interconnect
 3087                 0 = /dev/ipath        Primary device for programs (any unit)
 3088                 1 = /dev/ipath0       Access specifically to unit 0
 3089                 2 = /dev/ipath1       Access specifically to unit 1
 3090                   ...
 3091                 4 = /dev/ipath3       Access specifically to unit 3
 3092                 129 = /dev/ipath_sma    Device used by Subnet Management Agent
 3093                 130 = /dev/ipath_diag   Device used by diagnostics programs
 3094 
 3095 234-239         UNASSIGNED
 3096 
 3097 240-254 char    LOCAL/EXPERIMENTAL USE
 3098 
 3099 240-254 block   LOCAL/EXPERIMENTAL USE
 3100                 Allocated for local/experimental use.  For devices not
 3101                 assigned official numbers, these ranges should be
 3102                 used in order to avoid conflicting with future assignments.
 3103 
 3104 255 char        RESERVED
 3105 
 3106 255 block       RESERVED
 3107 
 3108                 This major is reserved to assist the expansion to a
 3109                 larger number space.  No device nodes with this major
 3110                 should ever be created on the filesystem.
 3111                 (This is probably not true anymore, but I'll leave it
 3112                 for now /Torben)
 3113 
 3114 ---LARGE MAJORS!!!!!---
 3115 
 3116 256 char        Equinox SST multi-port serial boards
 3117                    0 = /dev/ttyEQ0      First serial port on first Equinox SST board
 3118                  127 = /dev/ttyEQ127    Last serial port on first Equinox SST board
 3119                  128 = /dev/ttyEQ128    First serial port on second Equinox SST board
 3120                   ...
 3121                 1027 = /dev/ttyEQ1027   Last serial port on eighth Equinox SST board
 3122 
 3123 256 block       Resident Flash Disk Flash Translation Layer
 3124                   0 = /dev/rfda         First RFD FTL layer
 3125                  16 = /dev/rfdb         Second RFD FTL layer
 3126                   ...
 3127                 240 = /dev/rfdp         16th RFD FTL layer
 3128 
 3129 257 char        Phoenix Technologies Cryptographic Services Driver
 3130                   0 = /dev/ptlsec       Crypto Services Driver
 3131 
 3132 257 block       SSFDC Flash Translation Layer filesystem
 3133                   0 = /dev/ssfdca       First SSFDC layer
 3134                   8 = /dev/ssfdcb       Second SSFDC layer
 3135                  16 = /dev/ssfdcc       Third SSFDC layer
 3136                  24 = /dev/ssfdcd       4th SSFDC layer
 3137                  32 = /dev/ssfdce       5th SSFDC layer
 3138                  40 = /dev/ssfdcf       6th SSFDC layer
 3139                  48 = /dev/ssfdcg       7th SSFDC layer
 3140                  56 = /dev/ssfdch       8th SSFDC layer
 3141 
 3142 258 block       ROM/Flash read-only translation layer
 3143                   0 = /dev/blockrom0    First ROM card's translation layer interface
 3144                   1 = /dev/blockrom1    Second ROM card's translation layer interface
 3145                   ...
 3146 
 3147 259 block       Block Extended Major
 3148                   Used dynamically to hold additional partition minor
 3149                   numbers and allow large numbers of partitions per device
 3150 
 3151 259 char        FPGA configuration interfaces
 3152                   0 = /dev/icap0        First Xilinx internal configuration
 3153                   1 = /dev/icap1        Second Xilinx internal configuration
 3154 
 3155 260 char        OSD (Object-based-device) SCSI Device
 3156                   0 = /dev/osd0         First OSD Device
 3157                   1 = /dev/osd1         Second OSD Device
 3158                   ...
 3159                   255 = /dev/osd255     256th OSD Device
 3160 
 3161  ****   ADDITIONAL /dev DIRECTORY ENTRIES
 3162 
 3163 This section details additional entries that should or may exist in
 3164 the /dev directory.  It is preferred that symbolic links use the same
 3165 form (absolute or relative) as is indicated here.  Links are
 3166 classified as "hard" or "symbolic" depending on the preferred type of
 3167 link; if possible, the indicated type of link should be used.
 3168 
 3169 
 3170         Compulsory links
 3171 
 3172 These links should exist on all systems:
 3173 
 3174 /dev/fd         /proc/self/fd   symbolic        File descriptors
 3175 /dev/stdin      fd/0            symbolic        stdin file descriptor
 3176 /dev/stdout     fd/1            symbolic        stdout file descriptor
 3177 /dev/stderr     fd/2            symbolic        stderr file descriptor
 3178 /dev/nfsd       socksys         symbolic        Required by iBCS-2
 3179 /dev/X0R        null            symbolic        Required by iBCS-2
 3180 
 3181 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
 3182 
 3183         Recommended links
 3184 
 3185 It is recommended that these links exist on all systems:
 3186 
 3187 /dev/core       /proc/kcore     symbolic        Backward compatibility
 3188 /dev/ramdisk    ram0            symbolic        Backward compatibility
 3189 /dev/ftape      qft0            symbolic        Backward compatibility
 3190 /dev/bttv0      video0          symbolic        Backward compatibility
 3191 /dev/radio      radio0          symbolic        Backward compatibility
 3192 /dev/i2o*       /dev/i2o/*      symbolic        Backward compatibility
 3193 /dev/scd?       sr?             hard            Alternate SCSI CD-ROM name
 3194 
 3195         Locally defined links
 3196 
 3197 The following links may be established locally to conform to the
 3198 configuration of the system.  This is merely a tabulation of existing
 3199 practice, and does not constitute a recommendation.  However, if they
 3200 exist, they should have the following uses.
 3201 
 3202 /dev/mouse      mouse port      symbolic        Current mouse device
 3203 /dev/tape       tape device     symbolic        Current tape device
 3204 /dev/cdrom      CD-ROM device   symbolic        Current CD-ROM device
 3205 /dev/cdwriter   CD-writer       symbolic        Current CD-writer device
 3206 /dev/scanner    scanner         symbolic        Current scanner device
 3207 /dev/modem      modem port      symbolic        Current dialout device
 3208 /dev/root       root device     symbolic        Current root filesystem
 3209 /dev/swap       swap device     symbolic        Current swap device
 3210 
 3211 /dev/modem should not be used for a modem which supports dialin as
 3212 well as dialout, as it tends to cause lock file problems.  If it
 3213 exists, /dev/modem should point to the appropriate primary TTY device
 3214 (the use of the alternate callout devices is deprecated).
 3215 
 3216 For SCSI devices, /dev/tape and /dev/cdrom should point to the
 3217 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
 3218 /dev/cdwriter and /dev/scanner should point to the appropriate generic
 3219 SCSI devices (/dev/sg*).
 3220 
 3221 /dev/mouse may point to a primary serial TTY device, a hardware mouse
 3222 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
 3223 
 3224         Sockets and pipes
 3225 
 3226 Non-transient sockets and named pipes may exist in /dev.  Common entries are:
 3227 
 3228 /dev/printer    socket          lpd local socket
 3229 /dev/log        socket          syslog local socket
 3230 /dev/gpmdata    socket          gpm mouse multiplexer
 3231 
 3232         Mount points
 3233 
 3234 The following names are reserved for mounting special filesystems
 3235 under /dev.  These special filesystems provide kernel interfaces that
 3236 cannot be provided with standard device nodes.
 3237 
 3238 /dev/pts        devpts          PTY slave filesystem
 3239 /dev/shm        tmpfs           POSIX shared memory maintenance access
 3240 
 3241  ****   TERMINAL DEVICES
 3242 
 3243 Terminal, or TTY devices are a special class of character devices.  A
 3244 terminal device is any device that could act as a controlling terminal
 3245 for a session; this includes virtual consoles, serial ports, and
 3246 pseudoterminals (PTYs).
 3247 
 3248 All terminal devices share a common set of capabilities known as line
 3249 disciplines; these include the common terminal line discipline as well
 3250 as SLIP and PPP modes.
 3251 
 3252 All terminal devices are named similarly; this section explains the
 3253 naming and use of the various types of TTYs.  Note that the naming
 3254 conventions include several historical warts; some of these are
 3255 Linux-specific, some were inherited from other systems, and some
 3256 reflect Linux outgrowing a borrowed convention.
 3257 
 3258 A hash mark (#) in a device name is used here to indicate a decimal
 3259 number without leading zeroes.
 3260 
 3261         Virtual consoles and the console device
 3262 
 3263 Virtual consoles are full-screen terminal displays on the system video
 3264 monitor.  Virtual consoles are named /dev/tty#, with numbering
 3265 starting at /dev/tty1; /dev/tty0 is the current virtual console.
 3266 /dev/tty0 is the device that should be used to access the system video
 3267 card on those architectures for which the frame buffer devices
 3268 (/dev/fb*) are not applicable.  Do not use /dev/console
 3269 for this purpose.
 3270 
 3271 The console device, /dev/console, is the device to which system
 3272 messages should be sent, and on which logins should be permitted in
 3273 single-user mode.  Starting with Linux 2.1.71, /dev/console is managed
 3274 by the kernel; for previous versions it should be a symbolic link to
 3275 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
 3276 a serial port primary (tty*, not cu*) device, depending on the
 3277 configuration of the system.
 3278 
 3279         Serial ports
 3280 
 3281 Serial ports are RS-232 serial ports and any device which simulates
 3282 one, either in hardware (such as internal modems) or in software (such
 3283 as the ISDN driver.)  Under Linux, each serial ports has two device
 3284 names, the primary or callin device and the alternate or callout one.
 3285 Each kind of device is indicated by a different letter.  For any
 3286 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
 3287 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
 3288 correspond to /dev/cua# and /dev/cub#.  In the future, it should be
 3289 expected that multiple letters will be used; all letters will be upper
 3290 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
 3291 "cu" device (e.g. /dev/cudp#).
 3292 
 3293 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
 3294 
 3295 The alternate devices provide for kernel-based exclusion and somewhat
 3296 different defaults than the primary devices.  Their main purpose is to
 3297 allow the use of serial ports with programs with no inherent or broken
 3298 support for serial ports.  Their use is deprecated, and they may be
 3299 removed from a future version of Linux.
 3300 
 3301 Arbitration of serial ports is provided by the use of lock files with
 3302 the names /var/lock/LCK..ttyX#.  The contents of the lock file should
 3303 be the PID of the locking process as an ASCII number.
 3304 
 3305 It is common practice to install links such as /dev/modem
 3306 which point to serial ports.  In order to ensure proper locking in the
 3307 presence of these links, it is recommended that software chase
 3308 symlinks and lock all possible names; additionally, it is recommended
 3309 that a lock file be installed with the corresponding alternate
 3310 device.  In order to avoid deadlocks, it is recommended that the locks
 3311 are acquired in the following order, and released in the reverse:
 3312 
 3313         1. The symbolic link name, if any (/var/lock/LCK..modem)
 3314         2. The "tty" name (/var/lock/LCK..ttyS2)
 3315         3. The alternate device name (/var/lock/LCK..cua2)
 3316 
 3317 In the case of nested symbolic links, the lock files should be
 3318 installed in the order the symlinks are resolved.
 3319 
 3320 Under no circumstances should an application hold a lock while waiting
 3321 for another to be released.  In addition, applications which attempt
 3322 to create lock files for the corresponding alternate device names
 3323 should take into account the possibility of being used on a non-serial
 3324 port TTY, for which no alternate device would exist.
 3325 
 3326         Pseudoterminals (PTYs)
 3327 
 3328 Pseudoterminals, or PTYs, are used to create login sessions or provide
 3329 other capabilities requiring a TTY line discipline (including SLIP or
 3330 PPP capability) to arbitrary data-generation processes.  Each PTY has
 3331 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
 3332 /dev/tty[p-za-e][0-9a-f].  The kernel arbitrates the use of PTYs by
 3333 allowing each master side to be opened only once.
 3334 
 3335 Once the master side has been opened, the corresponding slave device
 3336 can be used in the same manner as any TTY device.  The master and
 3337 slave devices are connected by the kernel, generating the equivalent
 3338 of a bidirectional pipe with TTY capabilities.
 3339 
 3340 Recent versions of the Linux kernels and GNU libc contain support for
 3341 the System V/Unix98 naming scheme for PTYs, which assigns a common
 3342 device, /dev/ptmx, to all the masters (opening it will automatically
 3343 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
 3344 for the slaves; the slaves are named with decimal integers (/dev/pts/#
 3345 in our notation).  This removes the problem of exhausting the
 3346 namespace and enables the kernel to automatically create the device
 3347 nodes for the slaves on demand using the "devpts" filesystem.
 3348 

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