Program to make Backup of MBR

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Writing the Program to make Backup of MBR:

/* Program to make Backup of MBR */

#include <bios.h>
#include <stdio.h>

int main(void)
{
struct diskinfo_t dinfo; /* Structure to Hold the
information of disk Parameters */
int result;
int count=0;
char filename[80]; /* Stores the File name given by
User */
static char dbuf[512]; /* Data Buffer of 512 Bytes */
FILE *fp;

dinfo.drive = 0x80; /* drive number for First Hard
Disk */
dinfo.head = 0; /* disk head number */
dinfo.track = 0; /* track number */
dinfo.sector = 1; /* sector number */
dinfo.nsectors = 1; /* sector count */
dinfo.buffer = dbuf; /* data buffer */

printf("\n Enter The Filename and path to store the
Backup of MBR \n ");

gets(filename);

// Open The File to Store the MBR Backup \\

if((fp=fopen(filename,"wb"))==NULL)

{
printf("Could not Create File, Press any key to
Exit...");
getch();
exit(0);
}

printf("Attempting to read from Hard disk drive :\n");

//// Read the Specified Disk Sector \\\\

result = _bios_disk(_DISK_READ, &dinfo);

if ((result & 0xff00) == 0)

{
printf("Disk read from hard disk drive :
successful.\n");

/// Write 512 Bytes Of MBR to the File \\\\

while(count<512)
{
fprintf(fp,"%c",dbuf[count] & 0xff );
count++;
}
fclose(fp);
}
else
printf("Cannot read Hard Disk drive, status = 0x%02x\n", result);
return 0;
}

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Data Recovery Book
 
Chapter 1 An Overview of Data Recovery
Chapter 2 Introduction of Hard Disks
Chapter 3 Logical Approach to Disks and OS
Chapter 4 Number Systems
Chapter 5 Introduction of C Programming
Chapter 6 Introduction to Computer Basics
Chapter 7 Necessary DOS Commands
Chapter 8 Disk-BIOS Functions and Interrupts Handling With C
Chapter 9 Handling Large Hard Disks
Chapter 10 Data Recovery From Corrupted Floppy
Chapter 11 Making Backups
Chapter 12 Reading and Modifying MBR with Programming
Chapter 13 Reading and Modifying DBR with Programming
Chapter 14 Programming for “Raw File” Recovery
Chapter 15 Programming for Data Wipers
Chapter 16 Developing more Utilities for Disks
Appendix Glossary of Data Recovery Terms
 
 
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