C
typedef struct { SWORD BootSec_jmpBoot; BYTE BootSec_OEMName[8]; WORD BootSec_BytsPerSec; BYTE BootSec_SecPerClus; WORD BootSec_RsvdSecCnt; BYTE BootSec_NumFATs; WORD BootSec_RootEntCnt; WORD BootSec_TotSec16; BYTE BootSec_Media; WORD BootSec_FATSz16; WORD BootSec_SecPerTrk; WORD BootSec_NumHeads; DWORD BootSec_HiddSec; DWORD BootSec_TotSec32; DWORD BootSec_FATSz32; WORD BootSec_ExtFlags; WORD BootSec_FSVers; DWORD BootSec_RootClus; WORD BootSec_FSInfo; WORD BootSec_BkBootSec; BYTE BootSec_Reserved[12]; BYTE BootSec_DrvNum; BYTE BootSec_Reserved1; BYTE BootSec_BootSig; BYTE BootSec_VolID[4]; BYTE BootSec_VolLab[11]; BYTE BootSec_FilSysType[8]; } _BPB_FAT32;
Description
The _BPB_FAT32 structure provides a layout of the "bios parameter block" in the boot sector of a FAT32 partition.
Members
|
Members |
Description |
|
SWORD BootSec_jmpBoot; |
Jump Command |
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BYTE BootSec_OEMName[8]; |
OEM name |
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WORD BootSec_BytsPerSec; |
Number of bytes per sector |
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BYTE BootSec_SecPerClus; |
Number of sectors per cluster |
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WORD BootSec_RsvdSecCnt; |
Number of reserved sectors at the beginning of the partition |
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BYTE BootSec_NumFATs; |
Number of FATs on the partition |
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WORD BootSec_RootEntCnt; |
Number of root directory entries |
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WORD BootSec_TotSec16; |
Total number of sectors |
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BYTE BootSec_Media; |
Media descriptor |
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WORD BootSec_FATSz16; |
Number of sectors per FAT |
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WORD BootSec_SecPerTrk; |
Number of sectors per track |
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WORD BootSec_NumHeads; |
Number of heads |
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DWORD BootSec_HiddSec; |
Number of hidden sectors |
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DWORD BootSec_TotSec32; |
Total sector count (32 bits) |
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DWORD BootSec_FATSz32; |
Sectors per FAT (32 bits) |
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WORD BootSec_ExtFlags; |
Presently active FAT. Defined by bits 0-3 if bit 7 is 1. |
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WORD BootSec_FSVers; |
FAT32 filesystem version. Should be 0:0 |
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DWORD BootSec_RootClus; |
Start cluster of the root directory (should be 2) |
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WORD BootSec_FSInfo; |
File system information |
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WORD BootSec_BkBootSec; |
Backup boot sector address. |
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BYTE BootSec_Reserved[12]; |
Reserved space |
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BYTE BootSec_DrvNum; |
Drive number |
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BYTE BootSec_Reserved1; |
Reserved space |
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BYTE BootSec_BootSig; |
Boot signature - 0x29 |
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BYTE BootSec_VolID[4]; |
Volume ID |
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BYTE BootSec_VolLab[11]; |
Volume Label |
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BYTE BootSec_FilSysType[8]; |
File system type in ASCII. Not used for determination |