title: How to make a program run by BIOS?
body: <p>I searched for info about this but didn't find anything.</p>
  
  <p>The idea is: </p>
  
  <p>If I code a program in C, or any other languages, what else do I need to do for it to get recognized in BIOS and started by it as a DOS program or just a prompt program? </p>
  
  <p>I got this idea after I booted an flash drive with windows using the ISO and Rufus, which put some code in the flash drive for the BIOS to recognize it and run, so I would like to do the same with a program of mine, for example.</p>
  
  <p>Thanks in advance!</p>