Apple PowerBook (2400c) - Manual (Page 93)

I can’t save or copy files onto a floppy disk.
m The disk may be locked. Unlock it by sliding the tab at the corner of the
disk so that it covers the hole.
m The disk may be full. Throw away items on the disk that you no longer
need, or save the files on a different disk.
m The disk or disk drive may be damaged. Test it with Disk First Aid (on one
of the Disk Tools disks that came with your computer or in the Utilities
folder on the hard disk or the CD that came with the computer).
Hard disk drive
The computer won’t start up from the internal hard disk, or the hard disk icon doesn’t
appear on the desktop.
m There may be a temporary software problem. Turn off the computer, wait
at least 10 seconds, and then turn it on again.
The hard disk keeps stopping and starting again.
m The hard disk may be going to sleep to conserve power. Use the
PowerBook control panel to change the power conservation settings.
The computer is using the wrong disk as a startup disk.
m Open the Startup Disk control panel and make sure the correct disk is
selected. Then restart the computer.
m If you’re trying to start up from an external hard disk, the computer may
not be recognizing the disk. See “Problems With Equipment Connected to
Your Computer,” later in this chapter.
m There may be a problem with your startup disk or with its system software.
See “Testing Your Hard Disk” in Chapter 7.
93 Tips and Troubleshooting