K6610170
Rev.2
Dec 22, 2004
- 93 -
The SECURITY ERASE UNIT command erases all user data. The SECURITY ERASE PREPARE command
shall be completed immediately prior to the SECURITY ERASE UNIT command. If the device receives a
SECURITY ERASE UNIT command without an immediately prior SECURITY ERASE PREPARE command,
the device aborts the SECURITY ERASE UNIT command
This command disables the device lock function, however, the master password is still stored internally
within the device and may be reactivated later when a new user password is set. The device returns Aborted
command error if the device is in Frozen mode.
The execution time of this command is shown below.
-
HTC426030G7CE00 27
minutes
-
HTC426020G7CE10 20
minutes
7.5.31. Security Freeze Lock [F5h]
Task
File
Registers
7 6 5 4 3 2 1 0
Command F5h
LBA High
XX
LBA Mid
XX
LBA Low
XX
Device/Head
X X X
DRV
X X X X
Sector Count
XX
Features
XX
The SECURITY FREEZE LOCK command sets the device to frozen mode. After this command is completed
any other commands which update the device lock functions are rejected. Frozen mode is quit by power-off
or hardware reset. If Security Freeze Lock is issued when the device is in frozen mode, the command
executes and the device remains in frozen mode. The device returns Aborted command if the device is in
Locked Mode.
Commands disabled by Security Freeze Lock are:
−
SECURITY SET PASSWORD command
−
SECUIRTY UNLOCK command
−
SECURITY DISABLE PASSWORD command
−
SECURITY ERASE UNIT command