ok i'm a graphics design student and new here. My problem is i have a 100mb external zip drive on my Power Mac G4. I use the 100mb zips to transfer files from home to school. Anyhow after I upgraded to Panther I've lost 2 zip discs, when I insert them a window pops up saying that i've inserted a disc that contains no volumes mac os x can read. Anybody haver an idea of whats going on because this is getting annoying.