Yeah that's it. I've read a lot about this error, -6... But I couldn't find a single one yet with mine specifical error: as I said, Usb loader gone well till yesterday....Now when i run the application trough the HC it says "Could not open disc subsystem (ret = -6)". I tought the HD is broken, fried....It's really old BTW. Could I be right? or it's a common issue? I use an old 60 gigs maxtor and connect trough an IDE to Usb adaptor. Cios 13 rev b. See ya and thanks to anyone can help.