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11.42 Security Set Password (F1h)
Com m and Block Output Registers
Register
7
6
Data
-
-
Feature
-
-
Sector Count
-
-
Sector Number
-
-
Cylinder Low
-
-
Cylinder High
-
-
Device/Head
1
-
Command
1
1
Error Register
7
6
5
4
CRC UNC
0
IDN
0
0
0
0
Table 206 Security Set Password Command (F1h)
The Security Set Password command enables security mode feature (device lock function), and sets the master
password or the user password.
The security mode feature (device lock function) is enabled by this command, and the device is not locked
immediately. The device is locked after next power on reset. When the MASTER password is set by this command,
the master password is registered internally, but the device is NOT locked after next power on reset or hard reset.
This command requests a transfer of a single sector of data from the host including the information specified in Table
206 on the page 237.
The data transferred controls the function of this command.
Word
Description
00
Control word
bit 0
bit 1-7
bit 8
bit 9-15
01-16
Password
17
Master Password Revision Code
(valid if Word 0 bit 0 = 1)
18-255
Reserved
Table 207 Security Set Password Information
Identifier
Zero indicates that the device regards Password as User Password. One indicates that device
5
4
3
2
1
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
D
-
-
-
-
1
1
0
0
0
1
3
2
1
0
0
ABT
T0N AMN
0
V
0
0
: Identifier (1-Mater, 0-User)
: Reserved
: Security level
(1-Maximum, 0-High)
: Reserved
(32 byte)
Western Digital Hard Disk Drive OEM Specification
Com m and Block Input Registers
Register
7
6
5
Data
-
-
-
...See Below ...
Error
Sector Count
-
-
-
Sector Number
-
-
-
Cylinder Low
-
-
-
Cylinder High
-
-
-
Device/Head
-
-
-
...See Below ...
Status
Status Register
7
6
5
4
BSY RDY
DF
DSC DRQ COR
0
V
0
-
237
4
3
2
1
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3
2
1
0
IDX
ERR
-
0
-
V
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