Hitachi HDS723020BLA642 - Figure 9 Initial Setting; Operation Example; Password

Hitachi hard disk drive specifications
64
9.6.3 Password
This function can have 2 types of passwords as described below.
Master Password
When the Master Password is set, the device does NOT enable the Device Lock
Function, and the device can NOT be locked with the Master Password, but the Master
Password can be used for unlocking the device locked.
Identify Device Information word 92 contains the value of the Master Password Revision
Code set when the Master Password was last changed. Valid values are 0001h through
FFFEh.
User Password
The User Password should be given or changed by a system user. When the User
Password is set, the device enables the Device Lock Function, and then the device is
locked on next power on reset or hard reset.
The system manufacturer/dealer who intends to enable the device lock function for the end users, must set the
master password even if only single level password protection is required.
9.6.4 Operation example
9.6.4.1 Master Password setting
The system manufacturer/dealer can set a new Master Password from default Master Password using the
Security Set Password command, without enabling the Device Lock Function.
The Master Password Revision Code is set to FFFEh as shipping default by the HDD manufacturer
9.6.4.2 User Password setting
When a User Password is set, the device will automatically enter lock mode the next time the device is powered
on.
< Setting Password >
POR
Set Password with User Password
Normal operation
Power off
< No Setting Password >
POR
Normal operation
Power off
POR Device locked mode
POR Device unlocked mode
(Ref.)
Figure 9 Initial Setting