I'm starting to think maybe I do have a problem with termination. I don't really understand how "active" termination is different from passive termination, and which one is required. Are you saying that setting the Zip 100 termination switch to ON is insufficient? I have essentially the same problems trying to use this drive on an SE/30 and a Plus, so I don't think it's a Plus-specific problem.
PowerPup linked a great, three-page thread from 2007 from someone who was having similar problems with a Zip on his Plus. Eventually he got it to work, but unfortunatley he never explained what the solution was.
I have tried both the Lido-format method described at http://www.vintagemacworld.com/pluszip.html as well as the Iomega 4.2 driver method described at http://www.jagshouse.com/zipMacPlus.html. With the Iomega 4.2 driver, the driver extension icon appears with an X through it during startup, so something is wrong. This is true on both the SE/30 and the Plus, under system 6.0.8.
PowerPup linked a great, three-page thread from 2007 from someone who was having similar problems with a Zip on his Plus. Eventually he got it to work, but unfortunatley he never explained what the solution was.
I have tried both the Lido-format method described at http://www.vintagemacworld.com/pluszip.html as well as the Iomega 4.2 driver method described at http://www.jagshouse.com/zipMacPlus.html. With the Iomega 4.2 driver, the driver extension icon appears with an X through it during startup, so something is wrong. This is true on both the SE/30 and the Plus, under system 6.0.8.