Specifications

m Start up the computer with the Disk Tools disk. If the hard disk’s icon
appears, reinstall system software as described in Appendix A. Disk
repair programs can also sometimes fix problems with the hard disk.
m Restart the computer, holding the Shift key down, until you see the
message “Extensions off.” If this solves the problem, drag any control
panels or extensions you recently installed to the Trash.
m The information on the disk drive may be damaged. Try using a disk repair
program to repair or recover the information. If this doesn’t work, you’ll
need to reinitialize the hard disk. See the Macintosh Reference book.
m There may be a mechanical problem with the disk drive. If none of the
above suggestions works, take the computer to an Apple-authorized service
provider.
The hard disk keeps stopping and starting again.
m The hard disk may be going to sleep to conserve power. If this is
interfering with your work, use the Better Performance setting in the
PowerBook control panel.
The hard disk is full.
m You can reclaim space on your hard disk by removing unneeded files;
installing a smaller, customized System Folder; turning off virtual
memory; or using a disk optimization or file compression program.
The icon of a floppy disk doesn’t appear on the screen.
m There may be a problem with the disk or disk drive. Try inserting a
different disk. If its icon does appear, the original disk is probably damaged
or may need to be initialized. You may be able to repair the disk or recover
some of the information on it. See the the Macintosh Reference book. If the
icon of the second disk does not appear either, the disk drive may be
damaged. See an Apple-authorized service provider for repair.
m Restart the computer, holding the Shift key down, until you see the
message “Extensions off.” If this solves the problem, drag any control
panels or extensions you recently installed to the Trash.
123
Tips and Troubleshooting