Does he have a backup of his current data? If not get that done, either to DVD or CD or a FIrewire Drive. ;) You don't say which OS he is running. Does he have a Classic Partition running? Is the version of Diskwarrior appropriate for his computer/OS? Jens On Dec 8, 2006, at 12:04 AM, Paul Moortgat wrote: > A friend of mine has a G4 which acts very strange. But he can work > with. He tried DiskWarrior and got something like "..to severely > damaged to repair.." > Is there besides reformat any other solution?