drive error error reading FAT sector sector
    Facility: EFI$CP, The OpenVMS EFI Partition Control Program
    Explanation: this message reports a device error reading the
    File Allocation Table (FAT). If multiple copies of the FAT are
    present, similar errors are being reported across all copies.
    User Action: Attempt to copy all user data off the FAT volume, as
    it appears the FAT volume is failing.