Miscellany

/** fat_memorymap.h - Structure of the FAT File System* * ALL values are offsets of the sector or cluster they reside in***/#define FAT12						0x00#define FAT16						0x01#define FAT32						0x02/* MASTER BOOT RECORD SECTOR* * Sector begins at 0x0 of the disk if disk is partitioned**/#define MBR_DISK_ID					0x1b4#define MBR_PARTITIONTABLE			0x1be// Partition Table Entry (16 bytes)// Each Entry = MBR_PARTITONTABLE + (16 * entry_number)// Values offset from start of entry//// NOTE:	Start and end sector: bits 0-5: sector //			Bits 6-7 = bits 8-9 of cylinder#define PT_STATUS					0x000#define PT_START_HEAD				0x001#define PT_START_SECTOR				0x002#define PT_START_CYLINDER			0x003#define PT_PARTITION_TYPE			0x004#define PT_END_HEAD					0x005#define PT_END_SECTOR				0x006#define PT_END_CYLINDER				0x007#define PT_START_LBA				0x008#define PT_TOTAL_SECTORS			0x00c/* VOLUME BOOT RECORD SECTOR** Sector begins at 0x0 of the disk if unpartitioned, otherwise* begins at sector specified by partition table **///BIOS Parameter Block#define BPB_OEM_NAME				0x003#define BPB_BYTES_PER_SECTOR		0x00b#define BPB_SECTORS_PER_CLUSTER		0x00d#define BPB_RESERVED_SECTORS		0x00e#define BPB_NUMBER_FATS				0x010#define BPB_NUMBER_DIR_ENTRIES		0x011#define BPB_SECTORS_IN_VOLUME		0x013#define BPB_MEDIA_DESCRIPTOR		0x015#define BPB_SECTORS_PER_FAT			0x016#define BPB_SECTORS_PER_TRACK		0x018#define BPB_NUMBER_HEADS			0x01a#define BPB_HIDDEN_SECTORS			0x01c#define BPB_LARGE_SECTORS			0x020// Extended BPB (FAT12/16)#define EBPB_DRIVE_NUMBER			0x024#define EBPB_FLAGS					0x025#define EBPB_SIGNATURE				0x026#define EBPB_VOLUME_ID				0x027#define EBPB_VOLUME_LABEL			0x02B#define EBPB_IDENTIFIER				0x036// Extended BPB (FAT32)#define EBPB32_SECTORS_PER_FAT		0x024#define EBPB32_FLAGS				0x028#define EBPB32_FAT_VERSION			0x02a#define EBPB32_ROOT_CLUSTER			0x02c#define EBPB32_FSINFO_CLUSTER		0x030#define EBPB32_CLUSTER_BACKUP		0x032#define EBPB32_RESERVED				0x034#define EBPB32_DRIVE_NUMBER			0x040#define EBPB32_NT_FLAGS				0x041#define EBPB32_SIGNATURE			0x042#define EBPB32_VOLUME_ID			0x043#define EBPB32_VOLUME_LABEL			0x047#define EBPB32_IDENTIFIER			0x052