Program or code for pasting the boot image from a file to first sector of unreadable floppy

/// 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);
}

while(count<512)
{
fscanf(fp,"%c",&dbuf[count]);
count++;
}

dinfo.drive = 0x00; /* drive number for A: */
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 */

result = _bios_disk(_DISK_WRITE, &dinfo);

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

fclose(fp);

gotoxy(10,14);cprintf("Successful!!! I Hope Floppy May Work Now.\n");
}

else
{
gotoxy(10,14);
cprintf("Cannot read drive A, status = 0x%02x\n",result);
gotoxy(10,16);

switch(result)
{
case 0x00:
cprintf("\n\n STATUS: No Error!!");
break;

case 0x01:
cprintf("\n\n STATUS: Bad command");
break;

case 0x02:
cprintf("\n\n STATUS: Address mark not found");
break;

case 0x03:
cprintf("\n\n STATUS: Attempt to write to write-protected disk");
break;

case 0x04:
cprintf("\n\n STATUS: Sector not found");
break;

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