Displays the contents of the BIOS Parameter Block.

    Format

      SHOW BPB  volume

1  –  Parameter

 volume

    The target FAT volume for the command.

2  –  Qualifiers

2.1    /BLOCK

       /BLOCK=lbn

    The sector to be formatted as the BIOS Parameter Block (BPB). If
    not specified, the default will be the calculated sector for the
    current disk.

3  –  Description

    The SHOW BPB command is a diagnostic, and used to review the
    contents of the disk BIOS Parameter Block.

                                   NOTE

       Not immediately useful to users. This command is solely
       intended as a low-level disk diagnostic and debugging tool.

 EFI$CP> sho bpb efi:

 BPB: BIOS Parameter Block

 OEM Name          : <HP VMS  >
 Sector Size       : 512 Bytes
 Cluster Size      : 4 Sectors
 Allocation unit   : 2048 Bytes (sector size * cluster size)
 Reserved Sectors  : 1
 Max Directories   : 512 (Root Entries)
 FAT copies        : 2
 Media Code        : Hard Disk
 Jump Instruction  : 0xeb      (normal/expected)
 FAT Sectors 16    : 0x00fa
 Sectors per Track : 22
 Heads             : 23
 Sectors Hidden    : 0
 Total Sectors 16  : 0
 Total Sectors 32  : 256000
 Volume Size       : 256000 Sectors
                   : 131072000 Bytes

 FAT16 has been detected
 Volume claims to be <FAT16   >.

 FAT16 Boot Record Extension:
 Logical Drive     : 0
 Boot Signature    : 0x29
 Volume Serial #   : BA51-3A45   (0xba513a45)
 Volume Label      : E8_3_1H1    (bootsig)
 End Marker        : 0xaa55      (valid)

 OpenVMS EFI$CP Version
 EFI$CP Version    : EFI$CP V6.0-1
 FAT Variant       : 1