title: FreeNAS 9.3 not booting through USB
body: <p>I've used Win32diskimager to install FreeNAS 9.3 onto an 8GB USB stick, and configured the BIOS of my HP Proliant Microserver to put "USB Device Boot Priority" on High.</p>
  
  <p>However after inserting the USB stick and rebooting the server, it doesn't boot up completely, instead reaching a screen stating</p>
  
  <pre><code>This is a NAS data disk and can not boot system. System halting.
  </code></pre>
  
  <p>Can someone tell me what I've done wrong?
  Thanks in advance.</p>