11.22 Security Erase Prepare (F3h)
Command Block Output
Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7
6
5
CRC
UNC
0
0
0
0
Figure 121. Security Erase Prepare Command (F3h)
The Security Erase Prepare Command must be issued immediately before the Security Erase Unit
Command to enable device erasing and unlocking.
The Security Erase Prepare Command must be issued immediately before the Format Unit Command.
This command is intended to prevent accidental erasure of the device.
This command does not request transfer of data.
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 - 1 D - - - -
1 1 1 1 0 0 1 1
4
3
2
1
0
IDN
0
ABT
T0N
AMN
0
0
V
0
0
Deskstar 120GXP hard disk drive specifications
Command Block Input
Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Status Register
7
6
5
4
BSY
RDY
DF
DSC
0
V
0
V
143
7 6 5 4 3 2 1 0
- - - - - - - -
see below
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
see below
3
2
1
0
DRQ
COR
IDX
ERR
–
0
–
V