Subject: RE: Ok, we have been envoked.

From: [email-masked] (Skip Egdorf)
Date: Mon, 30 Mar 92 08:43:58 MST

Ok, since the file system standard went over so well, I propose this
   (open for discussion):

   /dev/wd			-- Western Digital and related disk controllers
   /dev/wd0		-- entire disk 0
   /dev/wd1		-- entire disk 1
   /dev/wd01		-- disk 0, partition 1
				   --etc--

   /dev/sd			-- SCSI controllers		
   /dev/sd0		-- entire DEVICE 0
   /dev/sd01		-- DEVICE 0, LUN 1
   /dev/sd011		-- DEVICE 0, LUN 1, partition 1		[???]

Typically, the "sd" or "wd" refers to a controller type. The 0, 1, ... is a
logical unit, and a letter "a" .. "h" is used to specify the logical partition.
so we would have (using 8 partitions)

/dev/wd0a and /dev/sd0a
/dev/wd0b and /dev/sd0b
...
/dev/wd0h and /dev/sd0h

with one of the partitions mapping the entire disk. Sun currently uses "c" for
this.

   /dev/tty[a-d]		-- com1 -> com4				[???]
				   [from SunOS]
Or (more V7, BSDish) /dev/tty[0-4].
Also used were /dev/tty[0123][0123456789abcdef] for things like 16-line
multiplexors. The first [0123] specified a controller and the [0-f] specified
line 0-15 of the device.

					Skip Egdorf
					[email-masked]

---

From: [email-masked]
Date: Mon, 30 Mar 92 20:33:26 +0200

Yes {wd,sd}[0-9][abcdefgh] seems right, but using c for the whole
disk is just a tad to strange for my liking. Would it be
to dangerous to just use {wd,sd}[0-9] ?

Also, I disagree with Ed Carp ([email-masked]). As we are still
very early in development, it sure better to change a bad design,
than to stick with it, just for sake of existing software.

/Tommy