Program to store the data of physical surface of the floppy disk to a file

/* Program to store the data of physical surface of the floppy disk to a file */

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

void main(void)
{
int head,track;
union REGS regs;
int result,i,sector;
char filename[80];
struct diskinfo_t dinfo;
static char dbuf[512];
FILE *tt;
clrscr();

printf("\n Enter The Name of file with Path to store The Data Temporarily\n");
gets(filename);

if((tt=fopen(filename,"wb"))==NULL)
{
printf("Could Not Create The File, Press any Key To EXIT");
getch();
exit(0);
}

printf("\n Initializing Floppy Disk System...\n");

/// Initialize the Disk System \\\

for(i=0; i<3; i++)
{
regs.h.ah = 0x00; /* Reset Disk System */
regs.h.dl = 0x00; /* Floppy Disk a: */

int86(0x13, &regs, &regs);
}

for(track=0;track<=79;track++)
{
for(head=0;head<=1;head++)
{
for(sector=1;sector<=18;sector++)
{
dinfo.drive = 0; /* drive number for A: */
dinfo.head = head; /* disk head number */
dinfo.track = track; /* track number */
dinfo.sector = sector; /* sector number */
dinfo.nsectors = 1; /* sector count */
dinfo.buffer = dbuf; /* data buffer */

result = _bios_disk(_DISK_READ, &dinfo);

if ((result & 0xff00) == 0)
{
for(i=0;i<512;i++)
fprintf(tt,"%c",dbuf[i] & 0xff);
}

else
{
printf("Cannot read drive A, status =
0x%02x\t%d\t%d\t%d\n", result,head,track,sector);
}

printf("Reading Track= %d Head= %d Sector= %d\n",
track,head,sector);
}
}
}
}

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