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Sense Data and Error Recovery Methods
364 C141-C013
Table 6.3 Sense key
Sense
Key
Name Explanation
0 NO SENSE The specific sense key does not exist.
1 RECOVERED ERROR 1) Indicates that the command which was executed last was terminated normally
with a recovery operation by the HDD. If multiple errors which were
successfully recovered from during processing of a single command occurred,
the last error to have occurred is reported.
2) Rounding processing of the MODE SELECT parameter was performed.
2 NOT READY The disk drive is not in a state where it can be accessed.
3 MEDIUM
ERROR
An irrecoverable error was detected due to a defect in the disk media or an error in
the recorded data.
4 HARDWARE ERROR The HDD detected an error in the hardware for which recovery processing is impossible
during command execution or self-diagnosis.
5 ILLEGAL REQUEST An illegal value was detected in the parameter transferred in the CDB or the
specification in the command. Also, an error in the LUN specification. If the
HDD detects an illegal parameter in the CDB, it terminates the command without
changing the contents of the disk media. If an illegal parameter is detected in the
parameters transferred from the INIT, the contents of the disk media may be
changed by that command.
6 UNIT
ATTENTION
A UNIT ATTENTION condition occurred.
7 DATA
PROTECT
1) An illegal operation was attempted in an area where a read or write operation is
prohibited. In this case, that command is not executed.
2) A SET LIMITS command was issued 2 times in a group of commands linked
in a series.
8 BLANK CHECK Not Used
9 (Reserved) Not Used
A COPY ABORTED Not Used
B ABORTED
COMMAND
The HDD terminated a command abnormally during execution. Normally, the INIT can
attempt to recover by reissuing that command.
C EQUAL Not Used
D VOLUME
OVERFLOW
Not Used
E MISCOMPARE During execution of a Byte Check with the VERIFY command, the data
transferred from the INIT were compared to the data read from the disk drive, but
they did not match.
F (Reserved) Not Used