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Title bootsector editer
Author Tapan Kumar Mishra
Author Email titu_igit [at] rediffmail.com
Description the bootsector/partion table of your hard
disk/floppy disk, and restore those whenever you want,rescue your computer from boot
Category C » Hardware Interaction Through C
Hits 15125
Code Select and Copy the Code
Code : /*program to save the partion table of your hard disk for future use. it will save your partition table in a file partition.dat */ #include<stdio.h> #include<bios.h> #include<conio.h> #include<stdlib.h> #include<ctype.h> void main () { FILE *f; int drive=0x0;//default drive is floppy drive char c,d; char buffer[512]; printf("1.Hard disk 2.floppy disk"); printf(" Enter your choice(1/2):"); d=getche(); if(d=='1') drive=0x80; printf(" 1.Creat the backup of your MBR ");//menu for user printf("2.Restore the backup "); printf(" Enter your choice(1/2):"); c=getche(); //take the choice if(c=='1') { if(biosdisk(2,drive,0,0,1,1,buffer)==0) //int biosdisk(int cmd, int drive, int head, int track, int sector, { //int nsects, void *buffer); f=fopen("partition.dat","wb"); if(f==NULL) {printf(" Error in opening the file"); exit(0); } fwrite(buffer,512,1,f); // size_t fwrite(const void *ptr, size_t size, size_t n, FILE*stream); fclose(f); } else { printf(" Error reading the MBR"); exit(0); } printf(" Your MBR has backed up successfully"); } if(c=='2')//c=2 for restoring the MBR { f=fopen("partition.dat","rb"); if(f==NULL) {printf(" Error in opening the file:partition.dat"); exit(0); } fread(buffer,512,1,f); printf(" Are you sure to restore:(y/n):"); d=getchar(); if(toupper(d)=='Y') {if(biosdisk(3,drive,0,0,1,1,buffer)!=0) printf(" Error in writing the sector"); else printf(" Your MBR has restored successfully"); } } }

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