Security Erase Unit (F4H); Figure 122. Security Erase Unit Command (F4H); Figure 123. Erase Unit Information - IBM IC35L040AVVN07-0 - 40GB IDE Deskstar 120GXP 7200RPM UATA-100 07N9682 Specifications

11.23 Security Erase Unit (F4h)

Command Block Output
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 122. 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. The Host MAX LBA
set by the Initialize Drive Parameter or the Set MAX Address command is ignored. So the protected area
by the Set MAX Address command is also initialized.
This command requests the transfer of a single sector data from the host including the information
specified in the figure below.
If the password does not match, the device rejects the command with an Aborted error.
Word
00
01-16
17-255

Figure 123. Erase Unit Information

Registers
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 - 1 D - - - -
1 1 1 1 0 1 0 0
4 3 2 1
IDN 0 ABT T0N
V 0 V 0
Description
Control Word
bit 0
bit 1
bit 2-15: Reserved
Password (32 bytes )
Reserved
Deskstar 120GXP hard disk drive specifications
Command Block Input
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Status Register
0 7 6
AMN BSY RDY DF
0 0 V
: Identifier (1- Master, 0- User)
: Erase mode (1- Enhanced, 0- Normal)
Enhanced mode is not supported
144
Registers
7 6 5 4 3 2 1 0
- - - - - - - -
see below
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
see below
5 4 3 2 1
DSC DRQ COR IDX
0 V – 0 –
0
ERR
V