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6.Command Specification TEST UNIT READY
6-104 SONY AIT-3Ex drive SDX-800V series Ver.1.1
6.28. TEST UNIT READY 00h
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation Code (00h)
1 Obsolete Reserved
2 Reserved
3 Reserved
4 Reserved
5 Control
TEST UNIT READY checks if the drive is ready. This is not a request for a self-test. If the drive has a tape loaded,
this command will return a GOOD status. Otherwise, CHECK CONDITION will be reported and the sense key will be
NOT READY.
Table 6-100: TEST UNIT READY results
Drive Status Sense Key ASC/ASCQ Description
Tape Loaded
No Tape Present
Tape Loading
Tape Unloading
Tape Unloaded (but retained in drive)
00 No Sense
02 Not Ready
02 Not Ready
02 Not Ready
02 Not Ready
00 NO ADDITIONAL SENSE INFORMATION
3A 00 MEDIUM NOT PRESENT
04 01 LOGICAL UNIT IS BECOMING READY
04 00 LOGICAL UNIT NOT READY
04 00 LOGICAL UNIT NOT READY