Epson 486SX - Manual (Page 172)

Diskette Problems
If you see a diskette error message or have trouble accessing
data on a diskette, try the following steps:
1. Did you secure the diskette in the drive properly? On a
drive, be sure to turn down the latch or press the
button.
2. You may have inserted the diskette upside-down or it may
not be inserted all the way. Remove the diskette from the
drive and reinsert it with the label facing up.
3. If reinserting the diskette does not solve the problem and
you have access to another diskette drive of the same type,
place the diskette in the other drive and repeat the
operation. If you can read the diskette, the trouble may be
in your diskette drive. See “Diskette Drive Problems,”
below.
4. Check to see if you have inserted the right type of diskette.
For example, are you trying to read a 1.44MB diskette in a
720KB diskette drive?
5. If your diskette is the right type for your drive, see if it is
write-protected. On a diskette, there may be a
write-protect tab over the notch on its side or there may be
no notch. On a diskette, the write-protect switch
may be set to the write-protect position or there may be no
switch. You cannot alter data on a write-protected diskette.
(Some application programs do not function properly if the
diskette is write-protected. Check the program manual.)
6. Is the diskette formatted? A new diskette must be formatted
before you can store data on it. See your operating system
manual for instructions on formatting diskettes.
Troubleshooting B-17