Hitachi 100GB 7200 RPM HTE721010G9SA00 User Manual
Product codes
HTE721010G9SA00
Travelstar E7K100 (SATA) Hard Disk Drive Specification
135
12.32 Security Unlock (F2h)
Table 93: Security Unlock (F2h)
This command unlocks the password and causes the device to enter device unlock mode. If a power on reset or
hard reset is done without executing the Security Disable Password command after this command is completed, the
device will be in device lock mode. The password has not been changed yet.
hard reset is done without executing the Security Disable Password command after this command is completed, the
device will be in device lock mode. The password has not been changed yet.
The Security Unlock command requests to transfer a single sector of data from the host including information spec-
ified in the table below.
ified in the table below.
If the Identifier bit is set to master and the drive is in high security mode, the password supplied will be compared
with the stored master password. If the drive is in maximum security mode, the security unlock will be rejected.
with the stored master password. If the drive is in maximum security mode, the security unlock will be rejected.
If the Identifier bit is set to user, the drive compares the supplied password with the stored user password.
If the password compare fails, the device returns an abort error to the host and decrements the unlock attempt
counter. This counter is initially set to 5 and is decremented for each password mismatch. When this counter
reaches zero, all password protected commands are rejected until there is a hard reset or a power off.
counter. This counter is initially set to 5 and is decremented for each password mismatch. When this counter
reaches zero, all password protected commands are rejected until there is a hard reset or a power off.
Identifier
A zero indicates that the device regards Password as the User Password. A one indicates that the
device regards Password as the Master Password.
device regards Password as the Master Password.
The user can detect if the attempt to unlock the device has failed due to a mismatched password since this is the
only reason that an abort error will be returned by the drive AFTER the password information has been sent to the
device. If an abort error is returned by the device BEFORE the password data has been sent to the drive, then
another problem exists.
only reason that an abort error will be returned by the drive AFTER the password information has been sent to the
device. If an abort error is returned by the device BEFORE the password data has been sent to the drive, then
another problem exists.
Command Block Output Registers
Command Block Input Registers
Register
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Data
- - - - - - - -
Data
- - - - - - - -
Feature
- - - - - - - -
Error
see below
Sector Count
- - - - - - - -
Sector Count
- - - - - - - -
LBA Low
- - - - - - - -
LBA Low
- - - - - - - -
LBA Mid
- - - - - - - -
LBA Mid
- - - - - - - -
LBA High
- - - - - - - -
LBA High
- - - - - - - -
Device
- - - - - - - -
Device
- - - - - - - -
Command
1 1 1 1 0 0 1 0
Status
see below
Error Register
Status Register
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CRC
UNC
0
IDN
0
ABT
T0N
AMN
BSY RDY
DF
DSC
DRQ
COR IDX
ERR
0
V
0
0
0
V
0
0
0
V
0
-
-
0
-
V
Word
Description
00
Control Word
bit 0 : Identifier (1- Master, 0- User)
bit 1-15 : Reserved
01-16
Password (32 bytes)
17-255 Reserved