manage-bde -lock Volume {-ForceDismount|-fd} {-ComputerName|-cn} ComputerName {-?|/?} {-Help|-h} Description: Prevents access ...

manage-bde -lock Volume {-ForceDismount|-fd}
                              [{-ComputerName|-cn} ComputerName]
                              [{-?|/?}] [{-Help|-h}]

Description:
    Prevents access to BitLocker-encrypted data. Once a data volume is locked,
    it can only be unlocked using one of the key protectors on the volume.
    No key protectors are deleted.

Parameter List:
    Volume      A drive letter followed by a colon, a volume GUID path or
                a mounted volume. Example: "C:",
                \\?\Volume{26a21bda-a627-11d7-9931-806e6f6e6963}\ or
                "C:\MountVolume"
    -ForceDismount or -fd
                Attempts to lock the volume even if it is in use. This allows
                the volume to be locked when applications have non-exclusive
                access to the volume.
    -ComputerName or -cn
                Runs on another computer. Examples: "ComputerX", "127.0.0.1"
    -? or /?    Displays brief help. Example: "-ParameterSet -?"
    -Help or -h Displays complete help. Example: "-ParameterSet -h"

Examples:
    manage-bde -lock e:
    manage-bde -lock e: -ForceDismount