target volume does not contain an MBR or GPT EFI partition

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

    Explanation: The specified target does not contain the structures
    associated with an OpenVMS EFI MBR or EFI GPT bootstrap.

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