Deskstar 7K160 Hard Disk Drive Specification
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10.22.2.4 Feature Control Command (action code: 0004h)
Inputs (Key Sector)
Outputs: (TF Data)
Word Name
alue Description
0 Action Code 0004h Set or return the state of drive features described in
Error! Reference source not found.
0001h Set state for a feature
0002h Return the current state of a feature
1 Function Code
0003h Return feature option flags
2 Feature Code Word
See Error! Reference source not found. for a list of
the feature codes
3 State Word Feature code dependent value
4 Option Flags Word Bit15:1 = Reserved
If the function code is 0001h, setting bit 0 to one
causes the requested feature state change to be
preserved across power cycles.
If the function code is 0001h, setting bit 0 to zero
causes the requested feature state change to be
volatile. A hard reset causes the drive to revert to
default, or last non-volatile setting.
255:5 reserved 0000h