Quoting David Rosenthal,

> 	   (Just to reiterate, more for my benefit than anything else :)

> 	   You've config'ed a kernel without wdc or wd*, and with
> 	   'config           netbsd  root on sd0 swap on sd0', and
> 	   tried 'disklabel -B' on the scsi disk under 1.2 as well?

> 	   Hmm, if it cant find the swap maybe somethings up with the
> 	   disklabel & 1.2 is more picky - can you post a copy of
> 	   your scsi disk label? (Does this happen on both scsi drives?)

> I installed 1.2 from the FTPed files onto a freshly formatted wd0,  and used
> it for the following steps.

> I copied using dump 0f - | ( cd /foo ; restore xf - ) the filesystems
> from wd0 to sd0.

> I put the 1.2 boot blocks onto sd0 using disklabel -B

[...]

What this looks like to me, is that the disklabel on your sd0 drive
says that it has type "ESDI", so the bootcode assumes that it has
a wd disk in its hands and tries to use it. It might be good having
a look at the disklabel.

- Frank