MdePkg/Include/IndustryStandard/Mbr.h

   1 /** @file
   2   Legacy Master Boot Record Format Definition.
   3
   4 Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
   5 This program and the accompanying materials
   6 are licensed and made available under the terms and conditions of the BSD License
   7 which accompanies this distribution.  The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef _MBR_H_
  16 #define _MBR_H_
  17
  18 #define MBR_SIGNATURE               0xaa55
  19
  20 #define EXTENDED_DOS_PARTITION      0x05
  21 #define EXTENDED_WINDOWS_PARTITION  0x0F
  22
  23 #define MAX_MBR_PARTITIONS          4
  24
  25 #define PMBR_GPT_PARTITION          0xEE
  26 #define EFI_PARTITION               0xEF
  27
  28 #define MBR_SIZE                    512
  29
  30 #pragma pack(1)
  31 ///
  32 /// MBR Partition Entry
  33 ///
  34 typedef struct {
  35   UINT8 BootIndicator;
  36   UINT8 StartHead;
  37   UINT8 StartSector;
  38   UINT8 StartTrack;
  39   UINT8 OSIndicator;
  40   UINT8 EndHead;
  41   UINT8 EndSector;
  42   UINT8 EndTrack;
  43   UINT8 StartingLBA[4];
  44   UINT8 SizeInLBA[4];
  45 } MBR_PARTITION_RECORD;
  46
  47 ///
  48 /// MBR Partition Table
  49 ///
  50 typedef struct {
  51   UINT8                 BootStrapCode[440];
  52   UINT8                 UniqueMbrSignature[4];
  53   UINT8                 Unknown[2];
  54   MBR_PARTITION_RECORD  Partition[MAX_MBR_PARTITIONS];
  55   UINT16                Signature;
  56 } MASTER_BOOT_RECORD;
  57
  58 #pragma pack()
  59
  60 #endif