title: How to write a simple command line OS?
body: <p>I have downloaded a MINIX 3 OS, and I run it in parallels desktop on my Mac pro.
  the MINIX3 is a .iso file, and I want to know how to write some program and pack it out to a .iso file. and run it by virtual machine(Parallels Desktop)?</p>
  
  <p>what should I do? </p>
  
  <p>I am a Android Developer.</p>