The example creates, connects, initializes and creates two
    directories on an LD logical disk device. The LD device size
    shown was explicitly chosen to match a common FAT12 floppy disk
    block size, per FAT12 requirements.

    This particular FAT12 volume is presently too small for the
    current OpenVMS I64 bootstrap files IPB.EXE and VMS_LOADER.EFI.