2.11BSD Device Names

[Glen Slick]

On Thu, Sep 15, 2016 at 1:13 PM, Ethan Dicks <ethan.dicks at gmail.com> wrote:
>> My question is, what is the device name in /dev for the first drive on the
>> second controller?
>
> Isn't it rb?
>
> -ethan

[ra8a - ra8h] block, major numer 5
[rra8a - rra8h] character/raw, major number 14

The low 6 bits of the minor number are the drive and partition. The
minor numbers for the drives and partitions on the second controller
are in the range 64-127.

# ls -l *ra8*
brw-r-----  1 root       5,  64 Aug  1  1995 ra8a
brw-r-----  1 root       5,  65 Dec 16  1991 ra8b
brw-r-----  1 root       5,  66 Dec 16  1991 ra8c
brw-r-----  1 root       5,  67 Dec 16  1991 ra8d
brw-r-----  1 root       5,  68 Dec 16  1991 ra8e
brw-r-----  1 root       5,  69 Dec 16  1991 ra8f
brw-r-----  1 root       5,  70 Dec 16  1991 ra8g
brw-r-----  1 root       5,  71 Dec 16  1991 ra8h
crw-r-----  1 root      14,  64 Dec 31  1997 rra8a
crw-r-----  1 root      14,  65 Dec 16  1991 rra8b
crw-r-----  1 root      14,  66 Nov  7  1995 rra8c
crw-r-----  1 root      14,  67 Dec 25  1991 rra8d
crw-r-----  1 root      14,  68 Dec 25  1991 rra8e
crw-r-----  1 root      14,  69 Dec 20  1991 rra8f
crw-r-----  1 root      14,  70 Jan 19  1997 rra8g
crw-r-----  1 root      14,  71 Dec 16  1991 rra8h