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'DWDHUURU Computer received un-
recoverable data-read
error from diskette or
hard-disk drive.
Faulty diskette, diskette
drive, or hard-disk drive.
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Read/write failure
during POST prevents
system from using avail-
able memory.
One or more DIMMs
faulty or improperly
seated.
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Diskette/tape drive con-
troller could not locate
specific sector or track.
Faulty or improperly
inserted diskette,
incorrect configuration
settings in System Setup
program, loose diskette/
tape drive interface cable,
or loose power cable.
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Failure occurred while
system attempted to
read diskette.
Faulty diskette, faulty or
improperly connected
diskette/tape drive inter-
face cable, or loose
power cable.
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System could not suc-
cessfully issue reset
command to diskette
controller.
Faulty diskette/tape drive
controller (defective sys-
tem board).
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Diskette write-protect
feature activated.
Diskette write-protected.
'ULYHQRWUHDG\ Diskette missing from
or improperly inserted
in diskette drive.
Defective, unformatted,
or improperly inserted
diskette.
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Gate A20 of the
keyboard controller
malfunctioned.
Faulty keyboard controller
(defective system board).
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not execute command.
Operating system cor-
rupted or not installed
properly.
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Hard-disk drive failed to
initialize.
Incorrect configuration
settings in System Setup
program, improperly con-
nected hard-disk drive
cable, faulty hard-disk
drive controller sub-
system, or loose power
cable.
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