i am having the same issue but my problem is the cable i have to replace it by opening the squirrel ,while moving cables it detected on the scsimounter ,i have also to internally put shunt on unit 2 ,and on the parity for it to detect ,put the active terminator and detected but changing the cd0 to cd 2 and unit=3 and device=squirrell.scsi
the cd icon didn´t appear i think i must replace the cable first then going deep inthe question :rtfm: