Hi, I've noticed another potential.

You have RZ25 disk with SCSI# set to 5.  NetBSD/pmax kernel does not
make the disk usable because it uses old SCSI machinary and disknames
is "wired" with SCSI ID number.  ID 5 and 6 are reserved for SCSI tape
drives. 

>            ---------------------------------------------------
>            DEV   PID                VID        REV    SCSI DEV
>            ===== ================== ========== ====== ========
>            rz3   RZ23     (C) DEC   DEC        0A18   DIR
>            rz4   RRD42   (C) DEC    DEC        4.5d   CD-ROM
>            rz5   RZ25     (C) DEC   DEC        0700   DIR
>
> ...
> NetBSD 1.2G (GENERIC) #19: Sat Aug 30 01:09:13 PDT 1997
>    jonathan@Reno.DSG.Stanford.EDU:/reno/compile/GENERIC
> real mem = 50331648
> avail mem = 42295296
> ...
> asc0 at asic0 offset 0x300000 priority 3: target 7
> Beginning old-style SCSI device autoconfiguration
> rz3 at asc0 drive 3 slave 0 DEC RZ23     (C) DEC rev 0A18, 204864 512
> byte blocks
> rz4 at asc0 drive 4 slave 0 DEC RRD42   (C) DEC rev 4.5d, 0 0 byte
> blocks
> boot device: rz3
> root on rz3a dumps on rz3b
> ...

Tohru Nishimura
Nara Institute of Science and Technology