IBM Aptiva Reference Manual page 44

If the problem is...
Can't read information on
diskette,
CD, DVD or Zip Disks
40
Here's what to do...
1 Make sure you are using the correct type of diskette
and that it is formatted correctly.
2 Make sure the diskette, CD, DVD or Zip disk is
inserted into the drive correctly.
3 Make sure the CD is clean and not scratched.
4 Try to use a diskette, CD, DVD or Zip disk that you
know is good. If it works, the first diskette, CD, DVD
or Zip disk may be damaged. If you can't read the
information on the good diskette, CD, DVD or Zip disk,
there may be a problem with your drive.
5 Make sure the power and signal cables are securely
attached to the back of the drive. For instructions on
working with drives, see the Aptiva online help.
6 Make sure the correct diskette drive is selected and
the diskette drive is enabled in the Setup Utility. For
information about Setup Utility options, see the Aptiva
online help.
If any of these problems continue after taking the actions
listed, run the diagnostics programs that came with your
computer. If you need service, see "HelpWare support and
services" on page 79.
Solving hardware problems