读写硬盘扇区的C语言程序.doc

读写硬盘的MBR和DBR扇区的程序。/* Master Boot Record Programme: * Backup the Master Boot Sector * Fix the Master Boot Sector * Change the Partition Table * - by Crystal.Mouse 04/30/99 - * Turboc 2.0 */#include #include #include #include #include #include #include #include #include /* define the */char buff512; /*buffer for master boot sector */* buffer1 backup for master boot sector */char buff1512;/* This is the dos boot programme data */char sector2512=0xEB,0x3C,0x90,0x4D,0x53,0x57,0x49,0x4E,0x34,0x2E,0x31,0x00,0x02,0x20,0x01,0x00,0x02,0x00,0x02,0x00,0x00,0xF8,0xC9,0x00,0x3F,0x00,0x40,0x00,0x3F,0x00,0x00,0x00,0x01,0x0A,0x19,0x00,0x80,0x00,0x29,0xDC,0x12,0x6F,0x04,0x30,0x34,0x32,0x36,0x39,0x39,0x20,0x20,0x20,0x20,0x20,0x46,0x41,0x54,0x31,0x36,0x20,0x20,0x20,0xFA,0x33,0xC9,0x8E,0xD1,0xBC,0xFC,0x7B,0x16,0x07,0xBD,0x78,0x00,0xC5,0x76,0x00,0x1E,0x56,0x16,0x55,0xBF,0x22,0x05,0x89,0x7E,0x00,0x89,0x4E,0x02,0xB1,0x0B,0xFC,0xF3,0xA4,0x06,0x1F,0xBD,0x00,0x7C,0xC6,0x45,0xFE,0x0F,0x8B,0x46,0x18,0x88,0x45,0xF9,0x38,0x4E,0x24,0x7D,0x22,0x8B,0xC1,0x99,0xE8,0x77,0x01,0x72,0x1A,0x83,0xEB,0x3A,0x66,0xA1,0x1C,0x7C,0x66,0x3B,0x07,0x8A,0x57,0xFC,0x75,0x06,0x80,0xCA,0x02,0x88,0x56,0x02,0x80,0xC3,0x10,0x73,0xED,0x33,0xC9,0x8A,0x46,0x10,0x98,0xF7,0x66,0x16,0x03,0x46,0x1C,0x13,0x56,0x1E,0x03,0x46,0x0E,0x13,0xD1,0x8B,0x76,0x11,0x60,0x89,0x46,0xFC,0x89,0x56,0xFE,0xB8,0x20,0x00,0xF7,0xE6,0x8B,0x5E,0x0B,0x03,0xC3,0x48,0xF7,0xF3,0x01,0x46,0xFC,0x11,0x4E,0xFE,0x61,0xBF,0x00,0x07,0xE8,0x23,0x01,0x72,0x39,0x38,0x2D,0x74,0x17,0x60,0xB1,0x0B,0xBE,0xD8,0x7D,0xF3,0xA6,0x61,0x74,0x39,0x4E,0x74,0x09,0x83,0xC7,0x20,0x3B,0xFB,0x72,0xE7,0xEB,0xDD,0xBE,0x7F,0x7D,0xAC,0x98,0x03,0xF0,0xAC,0x84,0xC0,0x74,0x17,0x3C,0xFF,0x74,0x09,0xB4,0x0E,0xBB,0x07,0x00,0xCD,0x10,0xEB,0xEE,0xBE,0x82,0x7D,0xEB,0xE5,0xBE,0x80,0x7D,0xEB,0xE0,0x98,0xCD,0x16,0x5E,0x1F,0x66,0x8F,0x04,0xCD,0x19,0xBE,0x81,0x7D,0x8B,0x7D,0x1A,0x8D,0x45,0xFE,0x8A,0x4E,0x0D,0xF7,0xE1,0x03,0x46,0xFC,0x13,0x56,0xFE,0xB1,0x04,0xE8,0xC1,0x00,0x72,0xD6,0xEA,0x00,0x02,0x70,0x00,0xB4,0x42,0xEB,0x2D,0x60,0x66,0x6A,0x00,0x52,0x50,0x06,0x53,0x6A,0x01,0x6A,0x10,0x8B,0xF4,0x74,0xEC,0x91,0x92,0x33,0xD2,0xF7,0x76,0x18,0x91,0xF7,0x76,0x18,0x42,0x87,0xCA,0xF7,0x76,0x1A,0x8A,0xF2,0x8A,0xE8,0xC0,0xCC,0x02,0x0A,0xCC,0xB8,0x01,0x02,0x8A,0x56,0x24,0xCD,0x13,0x8D,0x64,0x10,0x61,0x72,0x0A,0x40,0x75,0x01,0x42,0x03,0x5E,0x0B,0x49,0x75,0x77,0xC3,0x03,0x18,0x01,0x27,0x0D,0x0A,0x49,0x6E,0x76,0x61,0x6C,0x69,0x64,0x20,0x73,0x79,0x73,0x74,0x65,0x6D,0x20,0x64,0x69,0x73,0x6B,0xFF,0x0D,0x0A,0x44,0x69,0x73,0x6B,0x20,0x49,0x2F,0x4F,0x20,0x65,0x72,0x72,0x6F,0x72,0xFF,0x0D,0x0A,0x52,0x65,0x70,0x6C,0x61,0x63,0x65,0x20,0x74,0x68,0x65,0x20,0x64,0x69,0x73,0x6B,0x2C,0x20,0x61,0x6E,0x64,0x20,0x74,0x68,0x65,0x6E,0x20,0x70,0x72,0x65,0x73,0x73,0x20,0x61,0x6E,0x79,0x20,0x6B,0x65,0x79,0x0D,0x0A,0x00,0x00,0x49,0x4F,0x20,0x20,0x20,0x20,0x20,0x20,0x53,0x59,0x53,0x4D,0x53,0x44,0x4F,0x53,0x20,0x20,0x20,0x53,0x59,0x53,0x7F,0x01,0x00,0x41,0xBB,0x00,0x07,0x80,0x7E,0x02,0x0E,0xE9,0x40,0xFF,0x00,0x00,0x55,0xAA;/* sector1 is the Master boot program data */char sector1512=0xFA,0x33,0xC0,0x8E,0xD0,0xBC,0x00,0x7C,0x8B,0xF4,0x50,0x07,0x50,0x1F,0xFB,0xFC,0xBF,0x00,0x06,0xB9,0x00,0x01,0xF2,0xA5,0xEA,0x1D,0x06,0x00,0x00,0xB8,0x01,0x02,0xBB,0x00,0x08,0xB9,0x01,0x00,0xBA,0x80,0x00,0xCD,0x13,0xBF,0x00,0x06,0xBE,0x00,0x08,0xB9,0x00,0x01,0xFC,0xF3,0xA7,0x74,0x14,0xBE,0x17,0x07,0xE8,0x2F,0x01,0xB8,0x01,0x03,0xBB,0x00,0x06,0xB9,0x01,0x00,0xBA,0x80,0x00,0xCD,0x13,0xBE,0xBE,0x07,0xB3,0x04,0x80,0x3C,0x80,0x74,0x0E,0x80,0x3C,0x00,0x75,0x1C,0x83,0xC6,0x10,0xFE,0xCB,0x75,0xEF,0xCD,0x18,0x8B,0x14,0x8B,0x4C,0x02,0x8B,0xEE,0x83,0xC6,0x10,0xFE,0xCB,0x74,0x0D,0x80,0x3C,0x00,0x74,0xF4,0xBE,0xAE,0x06,0xE8,0xF0,0x00,0xEB,0xFE,0xBF,0x05,0x00,0xBB,0x00,0x7C,0xB8,0x01,0x02,0x57,0xCD,0x13,0x5F,0x73,0x0C,0x33,0xC0,0xCD,0x13,0x4F,0x75,0xED,0xBE,0xD2,0x06,0xEB,0xE0,0xBE,0xF7,0x06,0xBF,0xFE,0x7D,0x81,0x3D,0x55,0xAA,0x75,0xD4,0x8B,0xF5,0xEA,0x00,0x7C,0x00,0x00,0x49,0x6E,0x76,0x61,0x6C,0x69,0x64,0x20,0x70,0x61,0x72,0x74,0x69,0x74,0x69,0x6F,0x6E,0x20,0x74,0x61,0x62,0x6C,0x65,0x2E,0x20,0x4F,0x68,0x2C,0x6D,0x79,0x20,0x67,0x6F,0x64,0x21,0x00,0x45,0x72,0x72,0x6F,0x72,0x20,0x6C,0x6F,0x61,0x64,0x69,0x6E,0x67,0x20,0x6F,0x70,0x65,0x72,0x61,0x74,0x69,0x6E,0x67,0x20,0x73,0x79,0x73,0x74,0x65,0x6D,0x2E,0x20,0x57,0x68,0x79,0x3F,0x00,0x4D,0x69,0x73,0x73,0x69,0x6E,0x67,0x20,0x6F,0x70,0x65,0x72,0x61,0x74,0x69,0x6E,0x67,0x20,0x73,0x79,0x73,0x74,0x65,0x6D,0x2E,0x20,0x53,0x68,0x69,0x74,0x21,0x00,0x4D,0x61,0x73,0x74,0x65,0x72,0x20,0x42,0x6F,0x6F,0x74,0x20,0x53,0x65,0x63,0x74,0x6F,0x72,0x20,0x63,0x68,0x61,0x6E,0x67,0x65,0x64,0x2E,0x0A,0x0D,0x44,0x6F,0x6E,0x27,0x74,0x20,0x77,0x6F,0x72,0x72,0x79,0x2C,0x49,0x20,0x68,0x61,0x76,0x65,0x20,0x72,0x65,0x63,0x6F,0x76,0x65,0x72,0x65,0x64,0x20,0x69,0x74,0x21,0x20,0x43,0x6C,0x65,0x76,0x65,0x72,0x21,0x20,0x45,0x54,0x2D,0x4D,0x6F,0x75,0x73,0x65,0x20,0x59,0x65,0x61,0x68,0x21,0x0A,0x0D,0x00,0xAC,0x3C,0x00,0x74,0x0B,0x56,0xBB,0x07,0x00,0xB4,0x0E,0xCD,0x10,0x5E,0xEB,0xF0,0xC3,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x55,0xAA;char fnwrite20,fnread20; /* filename */FILE *fp; /* file pointer */int head,cylinder,sector,drive; /* harddisk head,cylinder sector drive */* define the key code */#define ESC 0x011b#define LEFT 0x4b00#define RIGHT 0x4d00#define UP 0x4800#define DOWN 0x5000#define HOME 0x4700#define END 0x4f00#define PGUP 0x4900#define PGDN 0x5100#define F2 0x3c00#define F1 0x3b00#define W 1#define R 0 /* flag for */#define D 0 /* flag for Dos Boot Sector */#define M 1 /* flag for Master Boot Sector */* declare the function */int fileopen(int f,char *file); /*Read or Creat the backupfile */int writembr(char *file); /* write the buffer to master boot sector */int writedbr(char *file); /* write the buffer to dos boot sector */int backupmbr(char *file); /* backup the Master Boot record data */int backupdbr(char *file); /* backup the dos boot sector data */int printmbr(); /* print the master boot sector */int init(int f); /* init the operating */void help(); /*help*/void title(); /* display the infomation */int copypart(char *src,char *dest);void infina(char *file); /* open or creat the backup file */void closecur(); /* close the cursor */void opencur(); /* open the cursor */int display(); /* display the data */void interrupt(*reset)(); /* interrupt reset the machine */void resetwin(); /* reset the screen */void search(); /* search the dos boot sector */int detect(int num,int driver,int f); /* detect the drive */int detect(int num,int driver,int f)/* detect the disk */union REGS r;r.h.ah=num;r.h.dl=driver;int86(0x13,&r,&r);if(f) return r.h.al;else return r.x.cflag;/* backup the dos boot sector */int backupdbr(char *file)int flag=1; /* flag for success or not */if(!fileopen(W,file) printf(nBackup file write error!); flag=0; return flag;/* rewrite the dos boot record */int writedbr(char *file)int flag; /* flag for success or not */char key;search(); /* search the the dos boot sector: head , cylinder and sector */init(D); /* initialize the dos boot sector data to the buffer */printf(nWarning.);printf(nIt might destory your harddisk!);printf(nDo you want to a backup?(y/n);key=getch();switch(key) case y: case Y: infina(fnwrite); /* input the backup filename */ if(!backupdbr(fnwrite) printf(nBackup error!); flag=0; break; case n: case N: if(!fileopen(R,file) /* open the existed backup file data to buffer */ printf(nBackup file %s open error!,file); flag=0; return flag; /* rewrite the dos boot sector with the buffer data */ if(biosdisk(0x03,0x80,head,cylinder,sector,1,buff1) printf(nWrite Master Boot Sector error!); flag=0; else printf(nWrite Dos Boot Sector OK!); flag=1; /* backup the Master Boot Sector data to file */int backupmbr(char *file)int flag=1;init(M); /* initialize the master boot sector to the buffer */ if(!fileopen(W,file) printf(nBackup file write error!); flag=0; return flag;int fileopen(int f,char *file)/* f for read or creat file */int flag=1;if(f=0) if(fp=fopen(file,rb)!=NULL) fread(buff1,512,1,fp); fclose(fp); else flag=0; if(f=1) if(fp=fopen(file,wb)!=NULL) fwrite(buff,512,1,fp); fclose(fp); else flag=0; return flag;int writembr(char *file)int flag=1;char key;printf(nWarning.);printf(nIt might destory your harddisk!);printf(nDo you want to a backup?(y/n);key=getch();switch(key) case y: case Y: infina(fnwrite); init(M); /* initialize the MBR to buffer */ if(!backupmbr(fnwrite) /* backup the MBR */ printf(nBackup error!); flag=0; printf(nFile %s backup ok!,fnwrite); if(!biosdisk(0x03,0x80,0,0,3,1,buff) printf(nThe old MBR write to head:0 , Cylinder:0 ,Sector:1 error!); if(!biosdisk(0x03,0x80,0,0,5,1,buff) printf(nThe old MBR write to head:0 , Cylinder:0 ,Sector:1 error!); printf(nThe old MBR also backup to the harddisk side 0 cylinder 0 sector 3 and 5.); flag=1; case n: case N: if(!fileopen(R,file) /* open the existed backup file */ printf(nBackup file %s open error!,file); flag=0; return flag; if(biosdisk(0x03,0x80,0,0,1,1,buff1) /* Rewrite the MBR with buffer1 */ printf(nWrite Master Boot Sector error!); flag=0; else printf(nWrite Master Boot Sector OK!); flag=1; return flag;int init(int f)int i;int result=1;for(i=0;i (A,B,.):); key=getch(); printf(%1c:,key); if(key=97) key=key-97; else key=key-65;/* if(detect(0x10,key,0) printf(nDriver %1c: not ready!,key+65); break; else if(detect(0x13,key,1)=0x03) printf(nDriver %1c: write protect!,key+65);break; else */ if(biosdisk(0x03,key,0,0,1,1,sector2) printf(nDriver %c: write error!,key+65); else printf(nDrive %1c: write OK!,key+65); break;/* fixed the MBR with default data */ case m: case M: printf(nIt would modify the Master Boot Record.); printf(nDo you want to backup?(Y/N); key=getch(); printf(%1c,key); if(key=y | key=Y) infina(fnwrite); if(!backupmbr(fnwrite) printf(nBackup Error!); break; else if(key=n | key=N)printf(nWarning:it would modify the Master Boot Sector!); init(M); if(buff0x1be&0x00ff)=0x80 | (buff0x1be+16&0x00ff)=0x80 | (buff0x1be+32&0x00ff)=0x80 | (buff0x1be+48&0x00ff)=0x80) copypart(buff+0x1be,sector1+0x1be); if(biosdisk(0x03,0x80,0,0,1,1,sector1) printf(nHardDisk Write error!); break; else printf(nHardDisk Write OK!); printf(nPress v to check it.); break;/* dos shell */ case s: case S: printf(nPress Exit to return.); system(); break;/* exit */ case q: case Q: title(); return 1;/* print the undefine command */ default: printf(%cBad command!,27); /* display the information */void title()printf(nThank you for using the programme.);printf(nProgrammer:Crystal.Mouse);printf(nDate:05/01/1999);/* change the destination partition table data with the source data */int copypart(char *src,char *dest)char len=0x40;while(len=0) *(dest+len)=*(src+len); len-;/* input the filename */void infina(char *file)printf(nPlease input the file name:);scanf(%s,file);void search()int i,addr;init(M);for(i=0x1be;i0x1fe;i+) if(buffi&0x00ff)=0x80) addr=i; break; head=buffaddr+1;sector=(buffaddr+22;cylinder=(buffaddr+26)*256+buffaddr+3;/* close the cursor */void closecur()union REGS r;r.h.ah=1;r.h.ch=0x20;int86(0x10,&r,&r);/* open the cursor */void opencur()union REGS r;r.h.ah=1;r.h.ch=12;r.h.cl=13;int86(0x10,&r,&r);void help() printf(ntMaster Boot sector backup programme.); printf(ntH: help.); printf(ntW: ReWrite the Master Boot Record from a file.); printf(ntB: Backup the Master Boot Record to a file.); printf(ntO: Save the Dos Boot Sector to a file.); printf(ntD: Rewrite the Dos Boot Sector from a file.); printf(ntI: Rewrite the Dos Boot Sector with a default.); printf(ntV: View the Master Boot Record.); printf(ntF: Fixed the floppy Boot Sector.); printf(ntM: The same with Command:Fdisk /mbr.); printf(ntS: Dos shell.); printf(ntQ: Exit the programme.); print