Hitachi HTS541616J9SA00 사용자 설명서

Travelstar 5K160 (SATA) Hard Disk Drive Specification

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14.27 Security Disable Password (F6h)

Command Block Output Registers

Command Block Input Registers

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

- -

- 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

CRC UNC 0

IDN

0 ABT T0N

BSY RDY

DF DSC DRQ

COR IDX

ERR

0 0 0 0 0 V 0 0

0 V 0 V - 0 0 V

Figure 63 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 “Password Information for Security Disable Password command”
on

Page 5

. 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 re-activated later by
setting User Password. This command should be executed in device unlock mode.

Word Description

00 Control

word

bit 0

: Identifier (1-Mater, 0-User)

bit 1-15

: Reserved

01-16 Password

(32

bytes)

17-255 Reserved

Figure 64 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.