6.Command Specification
TEST UNIT READY 00h
SONY AIT-5 drive SDX-1100V series Ver.1.0
6-102
6.28.
TEST UNIT READY 00h
Bit
Byte
7 6 5 4 3 2 1 0
0
Operation Code (00h)
1
Reserved
2
Reserved
3
Reserved
4
Reserved
5
Control
The TEST UNIT READY command provides a means to check if the drive is ready. This is not a request for a
self-test. If the drive is able to accept an appropriate medium-access command without returning a CHECK
CONDITION, this command will return a GOOD status. Otherwise, a CHECK CONDITION will be reported and the
sense key will be NOT READY.
Table 6-101: 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