Program to load default boot image to unreadable floppy disk

/// 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);
}

result = _bios_disk(_DISK_WRITE, &dinfo);

if ((result & 0xff00) == 0)
{
gotoxy(10,14);
cprintf("Disk Write Status :successful.\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;

case 0x06:
cprintf("\n\n STATUS: Disk changed since last operation");
break;

case 0x08:
cprintf("\n\n STATUS: Direct memory access (DMA) overrun");
break;

case 0x09:
cprintf("\n\n STATUS: Attempt to perform DMA across 64K boundary");
break;

case 0x0C:
cprintf("\n\n STATUS: Media type not found");
break;

case 0x10:
cprintf("\n\n STATUS: Bad CRC/ECC on disk read");
break;

case 0x20:
cprintf("\n\n STATUS: Controller has failed");
break;

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