Lenovo ThinkPad T400 2765 Hardware Maintenance Manual page 44

3. Select Security, using the cursor directional keys to move down the menu.
4. Select Password.
5. Select Hard-disk x password, where x is the letter of the hard disk drive. A
6. Select Master HDP.
7. Type the current master HDP in the Enter Current Password field. then leave
8. Press F10.
9. Select Yes in the Setup Configuration window.
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ThinkPad T400 and R400Hardware Maintenance Manual
Note: To check whether the ThinkPad computer 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 computer.
pop-up window opens.
the Enter New Password field blank, and press Enter twice.
Both user HDP and master HDP will have been removed.