Lenovo 28155YU, 28155XU, 2808DKU manual Select Master HDP

Note: To check whether the ThinkPad Notebook you are servicing supports the Passphrase function, enter the BIOS Setup Utility and go to Security --> Password. If Using Passphrase item is displayed in the menu, this function is available on the ThinkPad Notebook.

3.Select Security, using the cursor directional keys to move down the menu.

4.Select Password.

5.Select Hard-diskx password, where x is the letter of the hard disk drive. A pop-up window opens.

6.Select Master HDP.

7.Type the current master HDP in the Enter Current Password field. then leave the Enter New Password field blank, and press Enter twice.

8.Press F10.

9.Select Yes in the Setup Configuration window.

Both user HDP and master HDP will have been removed.

58ThinkPad T400s Hardware Maintenance Manual