I tried 3 VAXstations 4000/60 on all them I got  the same problem

if I Attach an external SCSI CD-ROM the device is not seen by show dev
and I do not know why.

The SCSI numbering for the device is allrite so I do not know why it is
not seen.

I was suvccesfull only with a 4000/90 but this model is not supported yet
complitely.

any of you knows if 3100 is instead supported ?

Rick