Deskstar 7K250 Hard Disk Drive Specification
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12.29 Security Disable Password (F6h)
Table 95: Security Disable Password (F6h)
The Security Disable Password command disables the security mode feature (device lock function).
The Security Disable Password command requests a transfer of a single sector of data from the host including
information specified in the table below. The device then checks the transferred password. If the User Password or
Master Password matches the given password, the device disables the security mode feature (device lock function).
This command does not change the Master Password which may be reactivated later by setting User Password.
This command should be executed in device unlock mode.
Table 96: Password Information for Security Disable Password command
The device will compare the password sent from this host with that specified in the control word.
Identifier
Zero indicates that the device should check the supplied password against the user pass-
word stored internally. One indicates that the device should check the given password
against the master password stored internally.
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
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - -
Command
1 1 1 1 0 1 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
0
0
0
0
V
0
0
0
V
0
V
-
0
-
V
Word
Description
00
Control word
bit 0 : Identifier (1-Master, 0- User)
bits 1-15 : Reserved
01-16
Password (32 bytes)
17- 255
Reserved
Содержание Deskstar 7K250
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