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PREVENT/ALLOW MEDIUM REMOVAL
7.9.
PREVENT/ALLOW MEDIUM REMOVAL 1Eh
Bit
7
Byte
0
1
2
3
4
5
6
7
8
9
10
11
The PREVENT ALLOW MEDIUM REMOVAL command requests that the drive enable or disable the removal of
the medium in the drive. The prevention of medium removal shall begin when the host issues a PREVENT
ALLOW MEDIUM REMOVAL command with a prevent bit of one (medium removal prevented). The prevention of
medium removal for the logical unit shall terminate:
1.
Upon a hard RESET condition.
2.
Upon the receipt of a Software RESET.
3.
After the host issues a PREVENT ALLOW MEDIUM REMOVAL command with a prevent bit of ZERO, and
the target has successfully performed a synchronize cache operation.
While a prevention of medium removal condition is in effect the device shall inhibit mechanisms that normally allow
removal of the medium by an operator.
Prevent: When this bit is set, the drive will not eject the tape following an UNLOAD. When it receives the
UNLOAD, the drive writes any buffered data to tape, rewinds and updates the system logs, then unthreads the
tape from the mechanism. The drive does not eject the tape. Setting this bit also completely disables the Eject
button on the front panel. This situation remains until the Prevent bit is set to ZERO. When this bit is set to ZERO,
the drive ejects the cassette following completion of an UNLOAD. The Eject button is also re-enabled.
The default state of the Sony ATAPI Tape Drive at power on is unlocked.
SONY AIT-2 Turbo drive SDX-560V series Ver.1.0
6
5
4
Operation Code (1Eh)
7. ATAPI Packet Command Specification
3
2
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
1
0
Prevent
7-41
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