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Product Manual - Disc Drive SCSI-2/SCSI-3 Interface (Vol. 2; Ver. 2), Rev. E
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Table 5.1.1-5. Applicable disc drive Sense Keys
Sense
Key
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 nonrecovered 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 per-
forming the command or during a self test. This includes SCSI interface parity error, controller
failure, device failure, etc.
5h
Illegal Request - Indicates an illegal parameter in the command descriptor block or in the addi-
tional parameters supplied as data for some commands (Format Unit, Mode Select, etc). 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 addi-
tional 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. See Paragraph 4.6 for more de-
tailed information about the Unit Attention Condition.
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 parti-
tion 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.
