I'm a bit off topic, but it's possible to "do" SCSI disk mode on just about any 68k Mac.
Take the hard drive out and change the SCSI ID to something other than ID 0 (some drives can do this in software).
Connect the two Macs with a 25 pin to 25 pin SCSI cable. Turn on the "disk mode" Mac and press the "programmers" interrupt button while the RAM test is running (you'll see the gray checkerboard pattern on screen). The Mac will crash with a "sad Mac" error on screen (if it's a Mac LC, this will be accompanied by a loud sound of screeching tyres and a car crash! Nice easter egg there). At this point, the "external disk" Mac has not yet initialised its SCSI controller, so it is not using SCSI ID 7 and you've changed the SCSI ID of its internal HD, so there are no SCSI ID conflicts.
Boot the second Mac... and voila, it has an external hard drive. I used this technique on many, many 68k Macs over a period of years to move data when customers upgraded to a new Mac. It's *much* faster than using the LocalTalk network, or backing up data to an external drive, then restoring to the new computer.
Take the hard drive out and change the SCSI ID to something other than ID 0 (some drives can do this in software).
Connect the two Macs with a 25 pin to 25 pin SCSI cable. Turn on the "disk mode" Mac and press the "programmers" interrupt button while the RAM test is running (you'll see the gray checkerboard pattern on screen). The Mac will crash with a "sad Mac" error on screen (if it's a Mac LC, this will be accompanied by a loud sound of screeching tyres and a car crash! Nice easter egg there). At this point, the "external disk" Mac has not yet initialised its SCSI controller, so it is not using SCSI ID 7 and you've changed the SCSI ID of its internal HD, so there are no SCSI ID conflicts.
Boot the second Mac... and voila, it has an external hard drive. I used this technique on many, many 68k Macs over a period of years to move data when customers upgraded to a new Mac. It's *much* faster than using the LocalTalk network, or backing up data to an external drive, then restoring to the new computer.