Security Set Password (F1H); Figure 112. Security Set Password Command (F1H) - IBM DTLA-305040 - Deskstar 41.1 GB Hard Drive Specifications

12.24 Security Set Password (F1h)

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

Figure 112. Security Set Password Command (F1h)

The Security Set Password command enables security mode feature (device lock function) and sets the
master password or the user password.
The security mode feature (device lock function) is enabled by this command and the device is not locked
immediately. The device is locked after next power on reset or hard reset. When the MASTER password
is set by this command, the master password is registered internally, but the device is NOT locked after
next power on reset or hard reset.
This command requests a transfer of a single sector of data from the host including the information
specified in the figure below.
The data transferred controls the function of this command.
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 - 1 D - - - -
1 1 1 1 0 0 0 1
4 3 2 1 0
IDN 0 ABT T0N AMN
0 0 V 0 0
Deskstar 40GV & 75GXP hard disk drive specifications
Command Block Input
Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Status Register
7 6 5 4
BSY RDY DF DSC
0 V 0 –
148
7 6 5 4 3 2 1 0
- - - - - - - -
see below
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
see below
3 2 1 0
DRQ COR IDX ERR
– 0 – V