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Unlock a BitLocker drive from command prompt, even in WinPE
Date Added: 4/25/2017

If you are in WindowsPE and need to unlock a BitLocker-protected drive, and you use a USB flash drive to store the key, run this command:

cscript %systemroot%\system32\manage-bde.wsf –unlock D: -rk J:\ ExternalKeyFileName

Where D is the drive letter you are trying to decrypt and J:\ ExternalKeyFileName is the path to the decryption key stored on the flash drive.

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