Prevent/Allow Medium Removal Command
140 T10000: Interface Reference Manual August 2016
Prevent/Allow Medium Removal Command
The Prevent/Allow Medium Removal command enables and disables the unload
switch. The switch is enabled unless this command is used.
Notes:
1. The tape does not have to be ready when a Prevent command is issued. The
Prevent Medium Removal command disables only the unload switch. Unload
commands from the host are still permitted.
2. Allow Medium Removal returns status to the host only after all buffered data is
written on tape (the tape must be loaded and ready).
3. Medium removal is allowed only after all initiators that issued a Prevent have
issued an Allow Medium Removal command.
4. A reset condition clears the prevent condition.
TABLE 3-92 Prevent/Allow Medium Removal Command
Byte
Bit
76543210
0 Operation Code (1Eh)
1
thru
3
(MSB)
Reserved
(LSB)
4 Reserved Prevent
5 Control Byte
Parameter Value
Prevent Prevent medium removal:
00 = Allow medium removal (enable switch)
01 = Prevent medium removal (disable switch)
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