I have a HP Vectra with a 40GB Maxtor HD in addition to the existing HD. The other day, I was saving a DVD to the Maxtor (set up as "master"). Though it was set to warn me before the HD became 90% full, and I did have plenty of space left on the drive, the disk locked up and has not worked since. I have gotten conflicting messages such as "disk not formatted", "disk capacity exceeded", "locked by utility", "read drive error", and "Invalid media type". I'm pretty good w/ this junk, but nothing seems to work. Can anyone help?