Use the command line to target the specific volume (e.g., bitlocker2john.exe -v E: ).

To understand the utility of bitlocker2john , one must first understand how BitLocker functions. BitLocker does not encrypt the entire drive with a user’s password directly. Instead, it utilizes a Full Volume Encryption Key (FVEK), which is then encrypted by a Volume Master Key (VMK). The VMK is protected by various protectors—most commonly a Recovery Key, a Trusted Platform Module (TPM) chip, or a user password.