target volume does not contain a MBR

    Facility: EFI$CP, The OpenVMS EFI Partition Control Program

    Explanation: The specified target volume does not contain the
    structures associated with an OpenVMS MBR.

    User Action: The command or request cannot operate as requested.
    If the target volume contains MBR structures, then the volume is
    apparently corrupted. If the target volume does not contain MBR
    structures, then the command cannot operate as requested.