I have a II GS with an Apple SCSI card hook to an external HD and ZIP drive. For the moment I have to disconnect the ZIP because it is somehow interfering with the HD, don't know why because it use to work before I move the II GS in the house.
If I recall correctly, SCSI Zip drives have two little switches on the back to set the SCSI ID and the termination. You should ensure that the SCSI ID of the Zip drive and the hard drive do not overlap (in case the SCSI ID switch was accidentally flipped). Also ensure that the chain is terminated exactly once. Check the termination switch on the Zip drive, and see how/if the hard drive is terminated (sometimes they use resistor packets, and sometimes they use jumpers).
But anyway, my question is more related to the IIGS, Apple SCSI card and the possibility of putting a 40 meg Internal SCSI disk in it. The card does not have a standard internal SCSI port, so, that make it a bit more complex to do. But I'd like to know if anyone did that successfully and how?
I don't see why you couldn't do it. Just get an old 50 pin ribbon cable, chop off one end; get a DB25 socket, map the correct pins from the DB25 socket to the ribbon cable, and solder everything up. Also draw out 5 and 12 V from the power supply, to actually power up the drive. Doing it that way avoids the possibility of botching the card. Would I suggest placing a hard drive in the IIgs case? Not really. The IIgs has a feeble power supply and the IIgs case may not be able to handle the heat generated by a drive.
