title: 'Debug' unformats floppy disk when writing bootloader to first sector
body: <p>I am trying to write a very basic operating system in Assembly by following this video:</p>
  
  <p><a href="http://www.youtube.com/watch?v=6MJUGVFAXKg" rel="nofollow">http://www.youtube.com/watch?v=6MJUGVFAXKg</a></p>
  
  <p>My code is fine and has all been compiled to .bin files via NASM and, using a virtual machine running Windows XP, I have written the bootloder file to the (virtual) floppy using the 'debug' command, as per the video. This is all successful, and when I boot into the OS, it displays a 'kernel.bin file not found' error, which is expected becasue the kernel file wasn't on the floppy disk. </p>
  
  <p>So I boot back into XP and try to copy the kernel.bin file to the floppy, but Windows tells me that the floppy is not formatted and asks me if I would like to format it. Obviously, once the disk is formatted, it is wiped, so it seems that I cannot have both the bootloader.bin and kernel.bin on the floppy at the same time.</p>
  
  <p>How do I write other files to the disk as well as the bootloader?</p>
  
  <p>You'll have to explain this in very simple terms; I'm an absolute beginner.</p>
  
  <p>Thanks.</p>