
Chapter 3 Media Changer Commands
Load Unload Command (1Bh)
Quantum ATL SuperLoader Software Interface Guide 45
Load Unload Command (1Bh) 3
The LOAD UNLOAD command tells the target to eject all
magazines. If no magazines are present, UNLOAD returns a
CHECK CONDITION status with an ILLEGAL REQUEST sense
key.
This command will eject the magazine(s) regardless of the setting
via the PREVENT/ALLOW MEDIUM REMOVAL command.
Figure 16 Load
Unload Command
Descriptor Block
Table 15 Unload
Command Descriptor
Block
Bit
Byte76543210
0
Operation Code (1Bh)
1
Logical Unit Number Reserved Immed
2 - 4
Reserved
5
Unused Reserved Flag Link
Field Name Description
Immed Immediate. If this bit is set to 1, status is returned as
soon as the operation is started. If set to 0, status is
returned after the operation has completed.
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