36 security set password (f1h) – Toshiba MK4006GAH User Manual
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11.8.36 SECURITY SET PASSWORD (F1h)
COMMAND CODE
1 1 1 1 0 0 0 1
REGISTER
REGISTER SETTING
NORMAL COMPLETION
DR
DRIVE No.
no change
CY
no
change
HD
no
change
SN
no
change
SC
no
change
FT
no
change
This command requests a transfer of a sector of data from the host including the information specified in the
table below. The function of this command is decided by the transferred data.
The revision code field is returned in the IDENTIFY DEVICE word 92. The valid revision codes are 0001h
through FFFEh. A value of 0000h or FFFFh indicated that the Master Password Revision Code is not
supported.
Security Set Password information
Word Content
0 Control
word
Bits 15-9 Reserved
Bits 8 Security level 0=High
1=Maximum
Bits 7-1 Reserved
Bit 0 Identifier 0=set user password
1=set master password
1-16
Password ( 32 bytes )
17
Master Password Revision Code (valid if word 0 bit 0 = 1)
18-255 Reserved
The settings of the identifier and security level bits interact as shown in the table below.
Identifier and security level
Identifier Level
Command
result
User
High
The password supplied with the command will be saved as the new user password. The lock
function will be enabled by the next power-on. The drive can then be unlocked by either the
user password or the previously set master password.
Master
High
This combination will set a master password but will not enable the lock function. The
security level is not changed. Master password revision code set to the value in Master
Password Revision Code field.
User
Maximum
The password supplied with the command will be saved as the new user password. The lock
function will be enabled by the next power-on. The drive can only be unlocked by the user
password. The master password previously set is still stored in the drive but will not be used
to unlock the drive.
Master
Maximum
This combination will set a master password but will not enable the lock function. The
security level is not changed. Master password revision code set to the value in Master
Password Revision Code field.