I think that may indicate Hard drive corruption or malfunction. It found the drive, but could not use it. Jim On Feb 19, 2010, at 12:50 PM, Bruce Ryan Nakamura wrote: > Hello, > > Instead of a ? mark, one of my G4 MDDs is showing an empty set > symbol on the screen upon start-up and won't fully boot. What does > the empty set symbol mean? > > Thank you, > > Scot Bruce Nakamura > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4