5K320 SATA OEM Specification
entered after power on, otherwise it is entered by a security unlock or a security erase unit command.
Device Frozen modeThe device enables all commands except those which can update the device lock function, set/change password. The device enters this mode via a Security Freeze Lock command. It cannot quit this mode until power off.
12.9.2Security Level
Following security levels are provided.
High level security | When the device lock function is enabled and the User Password is |
Maximum level security | forgotten the device can be unlocked via a Master Password. |
When the device lock function is enabled and the User Password is | |
| forgotten then only the Master Password with a Security Erase Unit |
| command can unlock the device. Then user data is erased. |
12.9.3Password
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 |
User Password | locked. |
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. If Software Setting |
| Preservation is disabled, the device is locked on COMRESET as well. |
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. Otherwise, if the User Password is forgotten then no one can unlock the device which is locked with the User Password.
12.9.4Master Password Revision Code
This Master Password Revision Code is set by Security Set Password command with the master password. And this revision code field is returned in the Identify Device command word 92. The valid revision codes are 0001h to FFFEh. The default value of Master Password Revision Code is FFFEh.
Value 0000h and FFFFh is reserved.
12.9.5Operation example
12.9.5.1 Master Password setting
The system manufacturer/dealer can set a initial Master Password using the Security Set Password command, without enabling the Device Lock Function.
12.9.5.2 User Password setting
When a User Password is set, the device will automatically enter lock mode the next time the device is powered on.
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