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The /dev directory contains special device files that control access to peripheral devices.
There are several subdirectories to the /dev directory. Each of these subdirectories holds special device files related to a certain type of device. For example, the /dev/dsk directory contains device files for floppy and hard disks. The operating system supports both XENIX and UNIX system device naming conventions. Where appropriate, the files in the /dev/dsk directories are linked to the device files that exist in /dev. You can access the same device through the file in /dev or the file for the same device in a subdirectory of /dev.
/dev/vdisk* devices are associated with the Virtual Disk Manager.
Commonly-used /dev device nodes
| UNIX device | XENIX device | Name |
|---|---|---|
| /dev/console | - | system console |
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/dev/rdsk/
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/dev/r
| raw devices |
| /dev/dsk/0s0 | /dev/hd00 | entire disk on drive 0 |
| /dev/dsk/0s1 | /dev/hd01 | first disk partition on drive 0 |
| /dev/dsk/0s2 | /dev/hd02 | second disk partition on drive 0 |
| /dev/dsk/1s0 | /dev/hd10 | entire disk on drive 1 |
| /dev/dsk/1s1 | /dev/hd11 | first disk partition on drive 1 |
| /dev/dsk/1s2 | /dev/hd12 | second disk partition on drive 1 |
| /dev/vdisk0 | - | virtual disk configuration database |
| /dev/vdisk1 | - | root filesystem mirror |
| /dev/vdisk2 | - | swap area mirror |
| /dev/dsk/f05d9 | /dev/fd048ds9 | 360K floppy drive 0 |
| /dev/dsk/f05q | /dev/fd096ds9 | 720K floppy drive 0 |
| /dev/dsk/f05h | /dev/fd096ds15 | 1.2MB floppy drive 0 |
| /dev/dsk/f03h | /dev/fd0135ds18 | 1.44MB floppy drive 0 |
| /dev/lp | - | lineprinter |
| /dev/kmem | - | kernel virtual memory |
| /dev/mem | - | physical memory |
| /dev/null | - | null device |
| /dev/rmt0 | /dev/rct0 | default cartridge tape device |
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| /dev/rft0 | QIC-40 tape device |
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| /dev/rctmini | minicartridge tape device |
| /dev/root | - | root file structure |
| /dev/swap | - | swap area |
| /dev/ptypnn |
| pseudo-tty (master) |
| /dev/ttypnn |
| pseudo-tty (slave) |
| /dev/ttynn |
| console multiscreen |
| /dev/tty1a | - | main serial line |
| /dev/tty2a | - | alternate serial line |
| /dev/tty1A | - | main serial line (modem control) |
| /dev/tty2A | - | alternate serial line (modem control) |