I've just fitted an internal Zip 100 drive to my trusty PowerMac 9600 (it was supposed to have one included, but for whatever reason, the previous owner removed it). It works fine with both Mac and PC formatted disks, but if I leave a disk in the drive when the computer is booting up, it will lock up with a frozen mouse cursor before the Happy Mac appears. The SCSI termination is (as far as I can tell) correct, and everything works fine when the system is running (I'm running OS 9.2.2).
SCSI IDs on this computer are:
0: Quantum internal HD (boot)
1: Compaq internal HD
2: Internal Zip drive
3: Internal HP CD-Writer
Ideas, anybody?
All ZIP disks have a version of the ZIP driver on them. Perhaps the driver on the ZIP disk is older than the one on your HD, or is corrupted, thereby causing your computer to crash during startup. When there's no disk in the drive during startup, then the version of the driver on the hard drive gets loaded instead.
So perhaps try reformatting your ZIP disk(s)?
Matt
Simple. Don't leave a disk in the drive when the computer is booting up.
I've tried reformatting - I discovered this problem when I reformatted the disks to Mac format and installed a minimal system on one of them. I'd like to be able to boot off one as a recovery disk.
AFAIK, zip disks won't boot a Mac, as the Mac needs a driver to properly access the zip drive.
http://www.jagshouse.com/zipMacPlus.html