The example creates, initializes and populates the SYS$EFI.TMP
    bootstrap partition with the two core directories and the two
    core files IPB.EXE and VMS_LOADER.EFI. (The actual bootstrap
    partition name is SYS$EFI.SYS.)

    The above example deliberately shows the hypothetical partition
    filename SYS$EFI.TMP and not the actual SYS$EFI.SYS partition
    filename. Corruption of the actual bootstrap partition will
    likely prevent OpenVMS I64 from bootstrapping.

    When a new bootable partition is created on the system disk or
    when an existing bootable partition is relocated on the system
    disk, use the SET BOOTBLOCK command or invoke the sys$setboot
    image directly to update the OpenVMS I64 bootblock and related
    structures accordingly. An existing bootable partition need not
    be re-registered, whether or not the partition contents have
    been modified. Use the SET FILE/NOMOVE command to prevent a
    defragmentation tool from erroneously relocating the file.