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FAT32 partitions. Unfortunately, we looked around here at Walnut Creek CDROM for any newer FAT32-supporting versions of Win95 and we were unsuccessful; only the older stuff here. So this is untested beyond simply making sure it compiles and someone with access to an actual FAT32 fs will have to let us know how well it actually works. Submitted by: Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru> Obtained from: NetBSD
114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/* $Id: bootsect.h,v 1.5 1997/02/22 09:40:43 peter Exp $ */
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/* $NetBSD: bootsect.h,v 1.9 1997/11/17 15:36:17 ws Exp $ */
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/*
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* Written by Paul Popelka (paulp@uts.amdahl.com)
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*
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* You can do anything you want with this software, just don't say you wrote
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* it, and don't remove this notice.
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*
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* This software is provided "as is".
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*
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* The author supplies this software to be publicly redistributed on the
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* understanding that the author is not responsible for the correct
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* functioning of this software in any circumstances and is not liable for
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* any damages caused by this software.
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*
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* October 1992
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*/
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/*
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* Format of a boot sector. This is the first sector on a DOS floppy disk
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* or the fist sector of a partition on a hard disk. But, it is not the
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* first sector of a partitioned hard disk.
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*/
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struct bootsector33 {
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u_int8_t bsJump[3]; /* jump inst E9xxxx or EBxx90 */
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int8_t bsOemName[8]; /* OEM name and version */
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int8_t bsBPB[19]; /* BIOS parameter block */
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int8_t bsDriveNumber; /* drive number (0x80) */
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int8_t bsBootCode[479]; /* pad so struct is 512b */
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u_int8_t bsBootSectSig0;
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u_int8_t bsBootSectSig1;
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#define BOOTSIG0 0x55
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#define BOOTSIG1 0xaa
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};
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struct extboot {
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int8_t exDriveNumber; /* drive number (0x80) */
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int8_t exReserved1; /* reserved */
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int8_t exBootSignature; /* ext. boot signature (0x29) */
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#define EXBOOTSIG 0x29
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int8_t exVolumeID[4]; /* volume ID number */
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int8_t exVolumeLabel[11]; /* volume label */
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int8_t exFileSysType[8]; /* fs type (FAT12 or FAT16) */
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};
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struct bootsector50 {
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u_int8_t bsJump[3]; /* jump inst E9xxxx or EBxx90 */
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int8_t bsOemName[8]; /* OEM name and version */
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int8_t bsBPB[25]; /* BIOS parameter block */
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int8_t bsExt[26]; /* Bootsector Extension */
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int8_t bsBootCode[448]; /* pad so structure is 512b */
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u_int8_t bsBootSectSig0;
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u_int8_t bsBootSectSig1;
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#define BOOTSIG0 0x55
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#define BOOTSIG1 0xaa
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};
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struct bootsector710 {
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u_int8_t bsJump[3]; /* jump inst E9xxxx or EBxx90 */
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int8_t bsOEMName[8]; /* OEM name and version */
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int8_t bsPBP[53]; /* BIOS parameter block */
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int8_t bsExt[26]; /* Bootsector Extension */
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int8_t bsBootCode[418]; /* pad so structure is 512b */
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u_int8_t bsBootSectSig2; /* 2 & 3 are only defined for FAT32? */
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u_int8_t bsBootSectSig3;
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u_int8_t bsBootSectSig0;
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u_int8_t bsBootSectSig1;
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#define BOOTSIG0 0x55
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#define BOOTSIG1 0xaa
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#define BOOTSIG2 0
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#define BOOTSIG3 0
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};
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#ifdef atari
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/*
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* The boot sector on a gemdos fs is a little bit different from the msdos fs
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* format. Currently there is no need to declare a seperate structure, the
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* bootsector33 struct will do.
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*/
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#if 0
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struct bootsec_atari {
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u_int8_t bsBranch[2]; /* branch inst if auto-boot */
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int8_t bsFiller[6]; /* anything or nothing */
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int8_t bsSerial[3]; /* serial no. for mediachange */
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int8_t bsBPB[19]; /* BIOS parameter block */
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int8_t bsBootCode[482]; /* pad so struct is 512b */
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};
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#endif
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#endif /* atari */
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union bootsector {
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struct bootsector33 bs33;
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struct bootsector50 bs50;
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struct bootsector710 bs710;
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};
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#if 0
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/*
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* Shorthand for fields in the bpb.
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*/
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#define bsBytesPerSec bsBPB.bpbBytesPerSec
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#define bsSectPerClust bsBPB.bpbSectPerClust
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#define bsResSectors bsBPB.bpbResSectors
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#define bsFATS bsBPB.bpbFATS
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#define bsRootDirEnts bsBPB.bpbRootDirEnts
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#define bsSectors bsBPB.bpbSectors
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#define bsMedia bsBPB.bpbMedia
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#define bsFATsecs bsBPB.bpbFATsecs
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#define bsSectPerTrack bsBPB.bpbSectPerTrack
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#define bsHeads bsBPB.bpbHeads
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#define bsHiddenSecs bsBPB.bpbHiddenSecs
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#define bsHugeSectors bsBPB.bpbHugeSectors
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#endif
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