Apple Power Macintosh 7600/200 Series - Manual (Page 183)

Testing and repairing your hard 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:
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, shut down your Macintosh, make sure that the
hard disk 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.
(See “Starting Up From the System Software CD-ROM Disc,” later in
this chapter.)
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 “Installing
System Software” later in this chapter.
m Check the ID numbers of all SCSI equipment (anything connected to
the SCSI port [g]) on your computer. For information on setting
SCSI ID numbers and terminating a SCSI chain, see both the manuals
that came with your SCSI equipment and Chapter 7, “Connecting
Additional Equipment.”
m If none of these suggestions solves the problem, test the disk by
following the instructions given in “Testing for Damage on Your Hard
Disk,” which follows.
183 Diagnostic Techniques