manage-bde -protectors -adbackup Volume -ID KeyProtectorID {-ComputerName|-cn} ComputerName {-?|/?} {-Help|-h} Description: ...

manage-bde -protectors -adbackup Volume
                       -ID KeyProtectorID
                       [{-ComputerName|-cn} ComputerName]
                       [{-?|/?}] [{-Help|-h}]

Description:
    Backs up recovery information for the drive.

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"
    -id         Backs up the key protector with a certain identifier.
    -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 -protectors -adbackup C: -id {84E151C1...7A62067A512}