invalid FAT16 volume cluster factor

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

    Explanation: Per EFI FAT specifications, no FAT16 volume can
    offer less than 4085 clusters nor more than 65524 clusters,
    and this volume is outside the valid range. The FAT volume is
    apparently corrupted.

    User Action: Reinitialize the FAT16 volume with a cluster size
    that will produce a cluster factor in the required range, or
    reinitialize the volume using FAT12 or FAT32.