As this is my first ever post, I would be grateful for any suggestions you may have.
I own a number of external SCSI-2 hard drives (Seagate, Western Digital & IBM), which used to work with an old Apple Mac (beige desktop G3) via onboard SCSI, in OS 9.2.2 and early OSX; and still work when attached to a PC in Windows XP.
I am now using an Apple Mac G4 (MDD) with an Adaptec 2906 SCSI adapter in OS 9.2.2 and OS 10.4.8, and none of the external drives appear in Drive Setup or Disk Utility; I also have a Tape Drive, installed in the same external SCSI bay as the hard drives, which works fine!
None of the individual devices is terminated, but the external SCSI bay has two (Centronics) connections); one is connected to the cable, and I have tried both Active and Passive terminators on the other. I have also had the entire external SCSI bay tested on another PC and both the tape drive and HDDs appear to be working.
Any advice much appreciated.