Repairing a damaged disk
If you see a message reporting that a disk is damaged or unreadable, you may need to repair the disk.
Try these suggestions first
If you can’t start up from a hard disk or you don’t see the hard disk icon on the desktop, try the following:
mIf the hard disk is internal, shut down your Macintosh, wait at least 10 seconds, and then turn it on again.
mIf the hard disk is external, make sure that it is turned on and that its cable is connected firmly; then restart the Macintosh.
mIf the hard disk is your startup disk, start up with a different startup disk. (See the previous section, “Starting Up From the Macintosh Performa CD: Performa Software.”)
If, after you start up from a different disk, your hard disk’s icon appears on your desktop, reinstall system software on the hard disk. (See Chapter 7, “Reinstalling Your Computer’s Software.”)
mCheck the ID numbers of all SCSI equipment (anything connected to the SCSI port [g]) on your computer. Each device must have a unique ID number. The computer itself (the main logic board inside it) has the ID number 7 and the internal
SCSI devices.
Also check that the chain of devices is terminated properly. For information on setting SCSI ID numbers and terminating a SCSI chain, see both the manuals that came with your SCSI equipment and Chapter 3 of this manual.
mIf none of these suggestions solves the problem, test the disk by following the instructions given in “Checking for Damage on Your Hard Disk,” which follows.
