MdePkg/Include/IndustryStandard/Mbr.h

/** @file
  Legacy Master Boot Record Format Definition.

Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef _MBR_H_
#define _MBR_H_

#define MBR_SIGNATURE  0xaa55

#define EXTENDED_DOS_PARTITION      0x05
#define EXTENDED_WINDOWS_PARTITION  0x0F

#define MAX_MBR_PARTITIONS  4

#define PMBR_GPT_PARTITION  0xEE
#define EFI_PARTITION       0xEF

#define MBR_SIZE  512

#pragma pack(1)
///
/// MBR Partition Entry
///
typedef struct {
  UINT8    BootIndicator;
  UINT8    StartHead;
  UINT8    StartSector;
  UINT8    StartTrack;
  UINT8    OSIndicator;
  UINT8    EndHead;
  UINT8    EndSector;
  UINT8    EndTrack;
  UINT8    StartingLBA[4];
  UINT8    SizeInLBA[4];
} MBR_PARTITION_RECORD;

///
/// MBR Partition Table
///
typedef struct {
  UINT8                   BootStrapCode[440];
  UINT8                   UniqueMbrSignature[4];
  UINT8                   Unknown[2];
  MBR_PARTITION_RECORD    Partition[MAX_MBR_PARTITIONS];
  UINT16                  Signature;
} MASTER_BOOT_RECORD;

#pragma pack()

#endif