SE FDHD Internal HDD won't boot — #3

Post #3 by tomlee59

Source Forum	68kMLA
Category	Software
Post Date	Tue, 6 Jul 2010 - 22:02
Original URL	https://68kmla.org/bb/threads/se-fdhd-internal-hdd-wont-boot.20902/

Post

Originally it had a 40mb apple drive in it that I tried replacing with two different 20mb drives. Still nothing. I replaced the SCSI ribbon even. Still the disk utility won't see the internal drive. I can boot it from an external SCSI drive no problem. Clearly that original internal drive is fried but why won't the others work? I can only assume it's a problem with termination or jumper settings or some other aspect of old SCSI drives I don't know a thing about. Is it possible that just the internal scsi has died. Is that possible without affecting the external SCSI? If anyone can offer some explanation I'd appreciate it.

Do you hear the drives spinning up? Many drives of that era and vintage suffered from stiction (Sony 20MB drives were notoriously unreliable, as were certain Quantum 40MB drives). Also, make sure that the drive jumpers are configured properly, and that the termination resistor packs are in place.