15.20 Security Disable Password (F6h)
see below
Status
1 1 1 1 0 1 1 0
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–V0V000V00000
ERRIDXCORDRQDSCDFRDYBSYAMNT0NABT0IDN0UNCCRC
0123456701234567
Status RegisterError Register
Figure 98. Security Disable Password command (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 figure below. Then the device 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.
Reserved17-255
Password (32 bytes )01-16
Control Word
bit 0 :Identifier (1- Master, 0- User)
bit 1-15 : Reserved
00
DescriptionWord
Figure 99. 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 password stored internally. One indicates that the device should check the
given password against the master password stored internally.
Deskstar 60 GXP Hard disk drive specification
138
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