I've been an ESI 32 owner for several years (from 1994 to 2001). I'm not sure whawt type of a Syquest removable drive you have. Myself I had a Syquest EZ drive (I think it was a 270MB). On occasion I would get an error message saying that the drive is full or that the card is locked (even though it was not). In some cases a restart helped. In others I had to reformat the card to make it usable again. THe thing about syquest drives (EZ or otherwise. Any removable media) is that they get messed up easely sometimes for no reason. So the drive could've been dropped or knocked around a bit. May be it was it's time to get screwed up but in either case try what I've suggested. If you still experience problems than the problem might have to do with SCSI connection. I'm no expert on that though.
Let me know how it turnes out and try posting at The Bar section just to let more people know about your problem. Traffic in the General discussion is sssllllooowww.
A gentleman is one who never hurts anyone's feelings unintentionally.
- - - Oscar Wilde