title: How to change platform of Amazon EC2 instance
body: <p>I have an on-demand instance running in Amazon EC2. I want to create a reserved instance. 
  My instance configuration is </p>
  
  <pre><code>Instance type :m1.small
  Availability zone:us-west-2c
  Platform: Red Hat Enterprise Linux Server release 6.4 
  </code></pre>
  
  <p>I have set up this instance with all required software to run my web service (30GB EBS is attached to this instance) </p>
  
  <p>Got to know how to create a reserved instance <a href="https://stackoverflow.com/questions/3821324/how-to-reserve-a-running-amazon-ec2-instance">from here</a>. When I was about to purchase a reserved instance, I noticed that Linux/UNIX is cost effective than Red Hat Enterprise Linux. Is there any way I can change my running instance platform or Should I redo every setup with a new instance?</p>