My consultant wiped the hard drive of my iMac G4 and now the os disk utility won't work to reformat the disk or reinstall the os. He wiped it on a PC (yeah, I know, but that's his world). When I boot from the osX.3.2 disk, it seems to start the os install process, but hangs when it gets to the disk format/erase part. Any ideas of how I can cure this, short of buying a new hard drive?