title: Testing Linux kernel quickly
body: <p>I want to learn linux kernel programming and so I downloaded Linux kernel 3.7.6 source from www.kernel.org. However before editing anything, I tried to compile it using online tutorials.</p>
  
  <p>The <code>make</code> takes a lot of time to compile and I haven't done it completely yet. Is there any quick way to change the source code and test it? Because I've read that kernel compilation takes around an hour.</p>
  
  <p>Also, If it is possible to copy and test the modified kernel on a USB drive?
  Is it possible to install GRUB on a USB drive, copy the kernel on USB, configure the GRUB on USB and then run it? If so, please give me any resources which have steps of doing the same. I also have GRUB installed on my laptop. How to set up new GRUB on USB without disturbing the configuration on my laptop? </p>
  
  <p>Thanks.. :)</p>