Table 127 Security Erase Unit Command (F4H); Security Erase Unit (F4H) - Hitachi HDS723020BLA642 Specifications

11.32 Security Erase Unit (F4h)

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

Table 127 Security Erase Unit Command (F4h)

The Security Erase Unit command initializes all user data sectors, and then disables the device lock function.
Note that the Security Erase Unit command initializes from LBA 0 to Native MAX LBA. Host MAX LBA set by
Initialize Drive Parameter, Device Configuration Overlay, or Set MAX Address command is ignored. So the
protected area by Set MAX Address command is also initialized.
This command requests to transfer a single sector data from the host including information specified in
127
on the page 185.
When security is disabled and the Identifier bit is set to User, then the device shall return command aborted.
7 6 5 4 3 2 1
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
1 - 1 D - - -
1 1 1 1 0 1 0
4 3 2 1
IDN 0 ABT T0N AMN
V 0 V 0
Hitachi hard disk drive specifications
Command Block Input Registers
0 Register
- Data
- Error
- Sector Count
- Sector Number
- Cylinder Low
- Cylinder High
- Device/Head
0 Status
Status Register
0 7 6 5
BSY RDY DF
0 0 V 0
185
7 6 5 4 3 2 1
- - - - - - -
...See Below...
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
...See Below...
4 3 2 1
DSC DRQ COR IDX ERR
V - 0 -
0
-
-
-
-
-
-
0
V
Table