I cannot start up my G4. The folder icon flashes with a question mark. I have rebooted using the system disc and get the message that my hard disk is unreadable and do I want to initalize. Uuurh No! The Apple Knowlege Base says there is a known issue with some hard disks that give the "disk is unreadable" message when trying to install system 9.1 and suggest a work round by choosing the CD as a starttup disk from the control panel. This fine if you can boot from the hard disk but I can't. Can anyone help me please?