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12.35 Remove Element and Truncate (7Ch)
12.35.1 Feature Set
This 48-bit command is for devices that support the Repurposing Depopulation feature set. 12.35.2 Description
The REMOVE ELEMENT AND TRUNCATE command requests that the device depopulate a storage element and
truncate the capacity of the device.
12.35.3
Inputs
Table 183 REMOVE ELEMENT AND TRUNCATE command inputs
Field
Description
FEATURE
ELEMENT IDENTIFIER field (31:16)
COUNT
ELEMENT IDENTIFIER field (15:0)
LBA
REQUESTED MAX LBA field
Bit Description
7 Obsolete
DEVICE
6 Reserved
5 Obsolete
4 Transport Dependent
3:0 Reserved
COMMAND 7:0 7Ch 12.35.3.1 ELEMENT IDENTIFIER field
The element identifier field specifies the storage element to be depopulated. If the element identifier field specifies an
element that is not a storage element (i.e., the PHYSICAL ELEMENT TYPE field (see Section 12.10.6.7.4) is not set
to 01h in the corresponding physical element status descriptor) or specifies an element not supported by the device,
then the device shall return command aborted with sense key set to ILLEGAL REQUEST and the additional sense
code set to INVALID FIELD IN CDB.
If the ELEMENT IDENTIFIER field specifies an element that is depopulated, then the device shall not take any
action and the command shall complete without error.
12.35.3.2 REQUESTED MAX LBA field
The REQUESTED MAX LBA field is used to specify the maximum LBA after completion of this command without
error.
The REQUESTED MAX LBA field specifies:
a) the native max address; and
b) the accessible max address.
A value of zero specifies that the device shall choose a single value for the native max address and the accessible
max address. A non-zero value specifies that the device shall:
a) set the native max address and the accessible max address to the specified value; or
b) return command aborted with the sense key set to ILLEGAL REQUEST and the additional sense code set
to INVALID FIELD IN CDB, and not change the native max address or the accessible max address.
The capacity values reported by the IDENTIFY DEVICE command and by the IDENTIFY DEVICE data log.
253
Hard Disk Drive Specification