Can I use a SCSI hard drive in a SCSI CD-ROM enclosure?

My question is, can I simply transfer the drive to a SCSI CD-ROM enclosure and access it from there?

Yes, absolutely. Those SCSI CD cases are the main source of external SCSI drive cases today. I still have several "regular" external drive cases in my basement lab, but I am a bit of a pack rat. (email me if you want one.)

Remember that you still have to deal with cable Termination and Termination Power issues. The standard way for external drives is to use an external terminator. Most (but not all) Macs can supply enough Termination Power to allow the external Terminator to function. In those few exceptions, setting the drive to "supply Term Power to the Bus" works like a charm.

The vast majority of those jumpers have to do with SCSI addressing. Each device on the SCSI Bus needs a unique address. The Controller takes #7, the built-in CD takes #3, and the built-in drive (if present) is most often 0.

If you can reverse the jumper-block built into the case, you may be able to get the number dial to work. If not, you can ignore it and set the address semi-permanently with jumpers directly on the drive. There appears to be more than one set on your drive, just choose the most accessible set and use only those. It's the setting on the Drive that will determine the address, not the case.

jumper marked 8 counts for 8 if present
jumper marked 4 counts for 4 if present
jumper marked 2 counts for 2 if present
jumper marked 1 counts for 1 if present
add-em-up to get the SCSI address.

No jumpers give address zero. A final Address of either 1 or 2 or 4 can be made with only one jumper.

For readers not familiar with this problem, the more common spacing for jumper pins is 0.1 inches apart, about 2.5mm. Later, space-conscious gadget manufacturers introduced jumper pins slightly closer together to save space. These are 2mm apart.

If you cannot tell the difference, try lining up as many pins or as many jumpers as you can and measuring the total length to see if it is closer to 2.5mm spacing (10 pins/inch) or 2.0mm spacing (12.5 pins/inch).

If you do not need jumpers on adjacent sets of pins, the larger jumpers can be used on the smaller pins -- but they cannot be used in adjacent positions because their plastic housings are too big. If you are really desperate, you can remove the brass jumper from its plastic housing and use it "naked".