Reinstalling Your Computer’s Software 39
You can’t start up the computer using the software install CD.
Your computer located the system software on your hard disk before it located the system
software on the CD. If you have an external hard disk with system software, the computer
may locate and start up from that device instead of the CD.
For information on starting up from a CD, see Chapter 2, “Starting Up From a CD,” on
page 25. Or, with the CD inserted, open the Startup Disk control panel and click the CD icon.
Then restart the computer. After you install the software, use the Startup Disk control panel
to reselect your hard disk, then restart your computer.
An error message appears saying installation couldn’t occur.
m If a message says installation could not occur because a file is open, quit all programs. If
file sharing is on, turn it off. Then try installing again.
m Restart your computer with virtual memory turned off. To do this, either restart your
computer from the software install CD (see Chapter 2, “Starting Up From a CD,” on
page 25) or hold down the Command (x) key until the message “Welcome to Mac OS”
appears. Then try installing again.
An error message says something is wrong with the hard disk.
m Use a third-party disk repair utility to see if it can repair the disk.
m If you don’t have a third-party utility, or if that utility can’t repair the disk either, you may
need to reinitialize the hard disk. See “Initializing a Hard Disk” on page 30.
m After you’ve reinitialized the disk, use the Mac OS Installer to reinstall system software,
then reinstall your application programs.
The Installer cannot update the hard disk driver.
m If you have a PowerBook, make sure you’ve turned off password protection in the
Password Security control panel.
m You may not have an Apple-brand hard disk or you don’t have an Apple-brand computer.
Use the disk utility recommended by the manufacturer of your computer or hard disk to
update the drivers on your system before installing Mac OS. Make sure to get the latest
version of the utility from the manufacturer. An old version will not be able to update your
disk with the most current driver.
m You may have previously updated your Apple hard disk with a non-Apple disk utility. You
need to use the utility you used previously to update the driver again. To ensure a
successful update, obtain the latest version of the utility from the manufacturer.
Warning If you use Norton Utilities, make sure you have version 3.5.2 or later. Using
earlier versions to repair a Mac OS Extended format hard disk may damage the data on
the disk.
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