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Repairing a damaged disk
Disks can become damaged by repeated use and handling.
When do you need to repair a disk?
If you see a message reporting that a disk is damaged or unreadable, you may
need to repair the disk.
Tr y 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:
m If the hard disk is internal, shut down your Macintosh, wait at least 10
seconds, and then turn it on again.
m If the hard disk is external, make sure that it is turned on and that its cable
is connected firmly; then restart the Macintosh.
m If the hard disk is your startup disk, start up with a different startup disk. If
the hard disk’s icon appears on your desktop, reinstall system software on
the hard disk (see “Installing or Reinstalling System Software” later in this
chapter).
m Check the ID numbers of all SCSI equipment connected to your computer.
Each device must have a unique ID number (the computer itself has the ID
number 7, and the internal hard disk has the number 0). Also check that the
chain of devices is terminated properly. For information on setting SCSI ID
numbers and terminating a SCSI chain, see the manuals that came with
your SCSI equipment.
m Test th e disk following the instructions that come next.
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Troubleshooting