... IO-Mega has sinced replaced ZIP with the REV drive, but it is similar tech, to be sure.
Yeah, similar in that it was still possible to have a disk corrupt somehow and break the drive. Then break any other disk that was inserted into the drive and break any other drive used to attempt recovery of data from the broken disk. As a previous comment said, like a hardware virus. May be why you can't get REV bits here in UK any more.