IBM DTLA-305040 Hard Drive Specifications - Page 160

Security Set Password F1h

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12.24 Security Set Password (F1h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 D - - - - Command 1 1 1 1 0 0 0 1 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count Sector Number Cylinder Low Cylinder High Device/Head Status see below Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 00000V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V 0 - - 0 -V 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. Deskstar 40GV & 75GXP hard disk drive specifications 148

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12.24 Security Set Password (F1h)
see below
Status
1 1 1 1 0 0 0 1
Command
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Sector Count
- - - - - - - -
Sector Count
see below
Error
- - - - - - - -
Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input
Registers
Command Block Output
Registers
V
–
0
–
–
0
V
0
0
0
V
0
0
0
0
0
ERR
IDX
COR
DRQ
DSC
DF
RDY
BSY
AMN
T0N
ABT
0
IDN
0
UNC
CRC
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Status Register
Error Register
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.
Deskstar 40GV & 75GXP hard disk drive specifications
148