10.8.39 SECURITY ERASE UNIT (F4h)
COMMAND CODE |
| 1 1 1 1 0 1 0 0 | REGISTER | |
| REGISTER SETTING | NORMAL COMPLETION | ||
DR |
| DRIVE No. | no change | |
CY |
|
|
| no change |
HD |
|
|
| no change |
SN |
|
|
| no change |
SC |
|
|
| no change |
FT |
|
|
| no change |
This command must be issued immediately after the SECURITY ERASE PREPARE command.
This command requests to transfer a sector of data from the host including the data specified in the following table. If the password does not match, the drive rejects the command with an Aborted command error.
|
| Security Erase Unit Information |
|
|
|
Word |
| Content |
0 | Control word | |
| Bit | Reserved |
| Bit 0 | Identifier 0=compare user password |
|
| 1=compare master password |
Password (32 bytes) | ||
Reserved |
| |
The SECURITY ERASE UNIT command erases all user data. The SECURITY ERASE PREPARE command must be completed immediately prior to the SECURITY ERASE UNIT command, otherwise, the SECURITY ERASE UNIT command shall be aborted..
This command disables the drive lock function, however, the master password is still stored internally within the drive and may be reactivated later when a new user password is set.
10.8.40 SECURITY FREEZE LOCK (F5h)
COMMAND CODE |
| 1 1 1 1 0 1 0 1 | REGISTER | |
| REGISTER SETTING | NORMAL COMPLETION | ||
DR |
| DRIVE No. | no change | |
CY |
|
|
| no change |
HD |
|
|
| no change |
SN |
|
|
| no change |
SC |
|
|
| no change |
FT |
|
|
| no change |
The SECURITY FREEZE LOCK allows the drive to enter frozen mode. After the completion of this command, any other commands that update the drive lock functions are rejected. The drive recovers from the frozen mode by
Following commands are rejected when the drive is in SECURITY FREEZE LOCK mode.
•SECURITY SET PASSWORD
•SECURITY UNLOCK
•SECURITY DISABLE PASSWORD
•SECURITY ERASE PREPARE
•SECURITY ERASE UNIT
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