BitLocker is a tool in Windows 11 that helps keep your files safe by locking your drives with a password or encryption. This means only you or authorized users can open and use the data on those drives.

You can use BitLocker to protect:

• Your computer’s main drive (where Windows is installed)
• Other fixed drives inside your PC
• USB drives or other external drives

When you turn on BitLocker for your main Windows drive, it usually unlocks automatically when you start your computer. But other drives stay locked until you unlock them.

Why Lock a BitLocker Drive?

Locking a BitLocker drive helps protect your files if someone else tries to use your computer or remove a drive without permission. For example, if you lock a USB drive, no one can read the files on it unless they have the password or key.

How to Lock a BitLocker Drive in Windows 11

Follow these simple steps to lock your BitLocker drive:

Step 1: Open Windows Terminal as an Administrator

1. Click the Start button (or press Windows key).

2. Type Windows Terminal.

3. Right-click on Windows Terminal from the search results and choose Run as administrator.

Step 2: Switch to PowerShell Tab

At the top of the Windows Terminal window, click the down arrow and select PowerShell.

Step 3: Lock Your Drive with the Command

Type the following command and press Enter:

Lock-BitLocker -MountPoint "<drive letter>:" -ForceDismount

Replace <drive letter> with the letter of the drive you want to lock. For example, to lock drive D, type:

Lock-BitLocker -MountPoint "D:" -ForceDismount

Alternative Method Using Command Prompt or PowerShell

You can also lock your drive by typing this command in Command Prompt or PowerShell (also run as administrator):

manage-bde -lock "<drive letter>:" -ForceDismount

Example for drive D:

manage-bde -lock "D:" -ForceDismount

Summary

• BitLocker helps keep your computer data safe by locking drives.
• You can lock external USB drives, fixed drives inside your PC, and your main system drive.
• Locking a drive means no one can access it without the right password or key.
• Use Windows Terminal or Command Prompt as an administrator to lock your drives easily.

For more details on turning on BitLocker, visit this easy guide: How to Turn On BitLocker in Windows 11.