IBM DJSA-205, Технические характеристики, Страница: 155 / 211

13.20 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 – V 0 V 0 0 0 V 0 0 0 0 0
ERR IDX COR DRQ DSC DF RDY BSY AMN T0N ABT 0 IDN 0 UNC CRC
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
Status Register Error Register
Figure 93. 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 Figure 93. 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.
Reserved 17–255
Password (32 bytes) 01–16
Control word
bit 0 : Identifier (1–Master, 0–User)
bits 1–15 : Reserved 00
Description Word
Figure 94. 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.
Travelstar 32GH/30GT/20GN hard disk drive specifications
141