finstext2.h

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#pragma once

#define PACKED          __attribute__((packed))

typedef struct
{
    unsigned char   JmpBoot[3];
    unsigned char   BootDrive;
    //unsigned char BootPartition;
    //unsigned char SectorsPerTrack;
    //unsigned short    NumberOfHeads;
    //unsigned long Reserved1;
    //unsigned long Reserved2;

    unsigned long   Ext2VolumeStartSector;  // Start sector of the ext2 volume
    unsigned long   Ext2BlockSize;          // Block size in sectors
    unsigned long   Ext2BlockSizeInBytes;   // Block size in bytes
    unsigned long   Ext2PointersPerBlock;   // Number of block pointers that can be contained in one block
    unsigned long   Ext2GroupDescPerBlock;  // Number of group descriptors per block
    unsigned long   Ext2FirstDataBlock;     // First data block (1 for 1024-byte blocks, 0 for bigger sizes)
    unsigned long   Ext2InodesPerGroup;     // Number of inodes per group
    unsigned long   Ext2InodesPerBlock;     // Number of inodes per block

    unsigned char   BootCodeAndData[459];

    unsigned char   BootPartition;
    unsigned short  BootSignature;

} PACKED EXT2_BOOTCODE, *PEXT2_BOOTCODE;