🚀 go-pugleaf

In article <1993Jan10.170814.9221@znext.cts.com> zeke@znext.cts.com writes:
>  so the syntax should be 
>	'b sd(0,2,0)' to boot off of sd2 partition a.  The NeXT only has one  
>controller ( unless you have an extra cpu card a la Spherical ) an that one  
>defaults to 0.  The syntax provided would probably confuse the system, and the

Um, no.  The first number is the SCSI ID, the second is the LUN (which lots
of people theorize will always be 0 on the NeXTs because they only have one
SCSI channel; makes sense to me but I can't confirm or deny it personally),
and the last is the partition number.

It loads the boot block off the device you ask for (it *may* check all
devices if the first one fails, but my experience with that suggests it
doesn't), and then it boots the kernel off of whatever device has it,
starting with the one you specify (e.g. a bsd(2,0,0) will check SCSI ID 2 for
a kernel, and if it can't find that, it'll check the rest of your devices).
-a will indeed ask you for the rootdevice, but you can always

bsd(2,0,0)- rootdev=sd1

Note the dash and the space.  You can replace the dash with 'sdmach' as well,
which is what the ROM monitor does for you, assuming a SCSI disk.

Be forewarned that if your root device is NOT /dev/sd0a, /etc/fstab is
incorrect and when you try to do a mount -o remount,rw / in /etc/rc.boot, it
ain't gonna work very well.

>  Zeke

I've booted off of non-sd0 devices before, and I know the syntax is
bsd(x,0,0) where x is the SCSI ID.  The other stuff I'm extrapolating from
the "nbuf" hack as I always used -a when I had to specify an alternate root
partition.
------
Mike Matthews, matthews@oberon.umd.edu (NeXTmail accepted)
------
Nothing recedes like success.
		-- Walter Winchell