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13.25 Security Disable Password (F6h)
Table 96: Security Disable Password (F6h)
Command Block Output Registers
Register
Data
Feature
Sector Count
LBA Low
LBA Mid
LBA High
Device
Command
Error Register
7
6
5
CRC UNC
0
IDN
0
0
0
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 97: Password Information for Security Disable Password command
Word
00
Control word
bit 0
bits 1-15
01-16
Password
17- 255
Reserved
The device will compare the password sent from this host with that specified in the control word.
Identifier
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 - 1 D - - - -
1 1 1 1 0 1 1 0
4
3
2
1
0
ABT T0N AMN
0
0
V
0
Description
: Identifier (1-Master, 0- User)
: Reserved
(32 bytes)
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.
Travelstar 80GN Hard Disk Drive Specification
Command Block Input Registers
Register
Data
Error
Sector Count
LBA Low
LBA Mid
LBA High
Device
Status
0
7
6
5
BSY RDY DF DSC DRQ
0
0
V
0
143
7 6 5 4 3 2 1 0
- - - - - - - -
see below
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
see below
Status Register
4
3
2
1
COR IDX
V
-
0
-
0
ERR
V
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