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To thoroughly test your floppy disk drives, follow this procedure:
1.
Insert a scratch diskette (one with no important data) into the drive.
2.
Set the step rate to the proper value (found in Appendix A) by typing SRT
value <cr>.
3.
Type DISKTEST ALL <cr> and press any key to start the test.
4.
N# will increment.
Stop the test by pressing the Escape key after N# has
g one pas t 3 and returned toO.
5.
Check the error count.
Look at the part of the command screen that looks
like this:
Soft E reor s:
Hard Errors:
00 00 00 00
00 00 00 00
The leftmost pairs of digits hold the soft and hard error counts for drive 0; the
next set is for drive 1,etc.
If
these locations are all equal to zero after the
test, there are no floppy drive errors.
If there are errors on only one drive, see
if
the scratch diskette is bad by repeating the test with that diskette in another
drive.
If there is no problem with the scratch diskette, there is probably a
hardware error.
The key to determining the fault in the floppy subsystem is to correctly interpret
the error messages.
The errors can be viewed by typing E drv' SjH, where
drv# stands for the drive that the errors occur on, and S;H is S for soft errors
and H for hard errors.
The error message will give a description of the error
and a possible cause.
A.
Errors Devdoped in Disktest - POSSIBLE CAUSES
(1)
S RT has not been set to correct value.
(See Appendix A.)
(2)
Incorrect
power is being supplied to the drives.
(See Appendix A.)
(3)
Loose or bad
power or data cabling.
(4) Bad diskette placed in drive.
Replace diskette.
(5)
If
errors occur on only one drive, switch diskettes between drives.
(6) If errors
occur on only one drive, possible bad drive.
(7)
If errors occur on both drives,
possible bad conuoller.
IMS International
5000 Series Microcomputersj7.0 1.83/page 112
J
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