One more suggestion.

> I switched my computer of and put the SCSI disk into my DECstation
> 5000/33, switched on. The disk is present as rz5. Now I typed in "boot
> 3/rz5/netbsd" and I saw the message "?IO: 3/rz5/netbsd  (bb rd)".

DECstation/ULTRIX had such a convention that rz (disk and CD-ROM)
devices were numbered as SCSI #0-4, while tz (tape) devices as #5-6. 

Although NetBSD/pmax will accept SCSI #5 device as a disk, it'd be
better to have disk device with lower SCSI IDs.

Tohru Nishimura