Hitachi IC25N040ATMR04-0 Specifications - Page 153

Security Disable Password F6h

Page 153 highlights

13.25 Security Disable Password (F6h) Table 96: Security Disable Password (F6h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count LBA Low LBA Mid LBA High Device 1 - 1 D - - - - Command 1 1 1 1 0 1 1 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count LBA Low LBA Mid LBA High Device Status see below 76 CRC UNC 00 Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 00 0 V 0 0 Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 V0V - 0 - V 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 01-16 17- 255 Description Control word bit 0 : Identifier (1-Master, 0- User) bits 1-15 : Reserved Password (32 bytes) Reserved 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. Travelstar 80GN Hard Disk Drive Specification 143

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Travelstar 80GN Hard Disk Drive Specification
143
13.25
Security Disable Password (F6h)
Table 96: 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 97: 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
- - - - - - - -
LBA Low
- - - - - - - -
LBA Low
- - - - - - - -
LBA Mid
- - - - - - - -
LBA Mid
- - - - - - - -
LBA High
- - - - - - - -
LBA High
- - - - - - - -
Device
1 - 1 D - - - -
Device
- - - - - - - -
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