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11.37 Sanitize Device Feature Set (B4h)
11.37.1 Crypto Scramble Ext Command (feature: 0011h)
Com m and Block Output Registers
Register
Data Low
Data High
Current
Feature
Previous
Current
Sector Count
Previous
Current
Sector Number
Previous
Current
Cylinder Low
Previous
Current
Cylinder High
Previous
Device/Head
Command
Error Register
7
6
5
4
CRC
UNC
0
IDN
V
Vs
0
V
Table 196 Crypto Scramble Ext Command (B4h/0011h)
The CRYPTO SCRAMBLE EXT command supports an encryption model only.
The CRYPTO SCRAMBLE EXT command starts a crypto scramble operation (i.e., a sanitize operation that changes
the internal encryption keys that are used for user data) causing the user data to become irretrievable.
The CRYPTO SCRAMBLE EXT command only is reported as supported if all user data is affected by changing
internal encryption keys.
After a successful crypto scramble operation, the contents of the user data area may be indeterminate.
The CRYPTO SCRAMBLE EXT command only is processed if:
a) the Sanitize Device feature set is supported
b) the device is in the SD0: Sanitize Idle state, the SD3: Sanitize Operation Failed state, or the SD4: Sanitize
Operation Succeeded state.
7
6
5
4
3
2
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0
0
0
1
0
0
0
0
0
0
0
0
0
0
-
-
-
V
-
-
-
-
-
-
-
-
-
-
0
1
1
1
0
0
0
0
1
0
0
0
0
1
0
1
1
1
1
0
0
-
-
-
-
-
-
-
0
1
1
1
0
0
1
-
-
-
-
-
-
-
1
1
1
D
-
-
-
1
0
1
1
0
1
0
3
2
1
0
ABT
T0N
AMN
0
V
0
Western Digital Hard Disk Drive OEM Specification
Com m and Block Input Registers
0
Register
-
Data Low
-
Data High
1
Error
0
-
Sector Count
-
0
Sector Number
1
1
Cylinder Low
-
0
Cylinder High
-
-
Device/Head
1
Status
0
7
6
5
BSY
RDY
DF
0
0
V
0
224
7
6
5
4
-
-
-
-
-
-
-
-
...See Below ...
HOB=0
-
-
-
-
-
V
V
V
HOB=1
HOB=0
V
V
V
V V V
HOB=1
-
-
-
-
HOB=0
V
V
V
V V V
HOB=1
-
-
-
-
HOB=0
-
-
-
-
HOB=1
-
-
-
-
-
-
-
-
...See Below ...
Status Register
4
3
2
DSC
DRQ
COR
V
-
0
3
2
1
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
V V
-
-
-
-
V V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
0
IDX
ERR
-
V
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