Option One:-
To Unlock a Data or Removable Drive Using BitLocker Wizard
1. Open the Control Panel -> System and security, click on the BitLocker Drive Encryption icon, and click on the Unlock Drive link for the locked drive that you would like to unlock. (see screenshot below)
2. Click on Unlock Drive.... (see screenshot below)
3. Click on the I forgot my password link. (see screenshot below)
4. Using the provided "recovery key ID" number in the screenshot below, locate the BitLocker recovery key for this drive, and then click on Type the recovery key. (see screenshots below)
5. Type in the long BitLocker recovery key number, and click on Next. (see screenshot below)
6. Click on Finish, and continue on to step 7. (see screenshot below)
NOTE: If you had forgotten the password, then you can now click on Manage BitLocker, and Change password to unlock drive to create a new one to use.
7. The drive will now be unlocked until you log off or restart the computer next.
Option Two:-
To Unlock a Data or Removable Drive in a Command Prompt
1. Open a elevated command prompt.
NOTE: This step is for if you lost or forgot the password for this drive.
A) Locate the BitLocker recovery key for this drive. (see screenshots below)
NOTE: Substitute E: in the command below with the drive letter of the locked drive that you wanted to unlock, and substitute BitLocker Recovery Key in the command below with the actual long number recovery key for the drive.
manage-bde -unlock D: -rp BitLocker Recovery Key
BitLocker Drive Encryption - Unlock a Locked Data or Removable Drive-cmd-recovery_key.jpg
C) Go to step 4.
4. The drive will now be unlocked until you log off or restart the computer next.
