I've just finished installing NetBSD 9.3 on a VAX 4000-705A using a
CMD CQD-220 MSCP SCSI host adapter. I put them install disk image on
a ZuluSCSI board, it booted and ran the installer just fine, but when
trying to boot the newly-created system disk (also implemented via the
ZuluSCSI SSD) it fails to find the controller and thus cannot mount
its filesystems.
I remember something like this from probably twenty years ago, but I
thought it was long since fixed.
The disk subsystem works fine; I installed VMS on it this morning
via the same mechanism and it's rock solid.
Does anyone have any suggestions?