Sense Key |
Name |
Description |
0h |
No Sense |
Indicates there is no specific Sense Key information to be reported
for the disc drive. This would be the case for a successful command or
when the ILI bit is one. |
1h |
Recovered Error |
Indicates the last command completed successfully with some recovery
action performed by the disc drive. When multiple recovered errors
occur, the last error that occurred is reported by the additional sense
bytes. Note: For some Mode settings, the last command may have
terminated before completing. |
2h |
Not Ready |
Indicates the logical unit addressed cannot be accessed. Operator intervention may be required to correct this condition. |
3h |
Medium Error |
Indicates the command terminated with a non-recovered error
condition, probably caused by a flaw in the medium or an error in the
recorded data. |
4h |
Hardware Error |
Indicates the disc drive detected a nonrecoverable hardware failure
while performing the command or during a self test. This includes SCSI
interface parity error, controller failure or device failure. |
5h |
Illegal Request |
Indicates an illegal parameter in the command descriptor block or in
the additional parameters supplied as data for some commands (Format
Unit, Mode Select, and so forth). If the disc drive detects an invalid
parameter in the Command Descriptor Block, it shall terminate the
command without altering the medium. If the disc drive detects an
invalid parameter in the additional parameters supplied as data, the
disc drive may have already altered the medium. This sense key may also
indicate that an invalid IDENTIFY message was received. This could also
indicate an attempt to write past the last logical block. |
6h |
Unit Attention |
Indicates the disc drive may have been reset. |
7h |
Data Protect |
Indicates that a command that reads or writes the medium was
attempted on a block that is protected from this operation. The read or
write operation is not performed. |
9h |
Firmware Error |
Vendor specific sense key. |
Bh |
Aborted Command |
Indicates the disc drive aborted the command. The initiator may be able to recover by trying the command again. |
Ch |
Equal |
Indicates a SEARCH DATA command has satisfied an equal comparison. |
Dh |
Volume Overflow |
Indicates a buffered peripheral device has reached the end of medium
partition and data remains in the buffer that has not been written to
the medium. |
Eh |
Miscompare |
Indicates that the source data did not match the data read from the medium. |