Seagate Spinpoint M8, Руководство по эксплуатации продукта

Страница: 66 / 83

Spinpoint M8 Product Manual REV 2.6
60
Table 8-8 Security Erase Unit Password
Word Content
0 Control word.
Bit 0
Identifier 0= compare User password
1= compare Master
password
Bit 1
Erase mode 0= Normal erase
1= Enhanced erase
Bit (15:2) Reserved
1-16 Password (32 bytes)
17-255 Reserved
8.2.25 Security Freeze Lock (F5h)
The SECURITY FREEZE LOCK command shall set the device to frozen mode. After command completion
any other commands that update the device Lock mode shall be command aborted. Frozen mode shall be
disabled by power-off or hardware reset. If SECURITY FREEZE LOCK shall be issued when the device is in
frozen mode, the command executes and the device shall remain in frozen mode.
Commands disabled by SECURITY FREEZE LOCK are as follows:
SECURITY SET PASSWORD
SECURITY UNLOCK
SECURITY DISABLE PASSWORD
SECURITY
ERASE PREPARE
SECURITY ERASE UNIT
8.2.26 Security Set Password (F1h)
This command transfers 512 bytes of data from the host. Table defines the content of this information. The
data transferred controls the function of this command. It also defines the interaction of the identifier and
security level bits.
Table 8-9 Security Set Password data content
Word Content
0 Control word.
Bit 0
Identifier 0= set User password
1= set Master password
Bit (7:1) Reserved
Bit 8 Security level 0= High
1= Maximum
Bit (15:2) Reserved
1-16 Password (32 bytes)
17 Master Password Revision Code (valid if word 0 bit 0 = 1)
18-255 Reserved