title: Mongodb not starting
body: <p>I installed mongodb a few days ago on my ubuntu machine and I was using it without any problems. Today I had to restart my PC. After that, mongo simply wont start. It says:</p>
  
  <pre><code>Wed Sep 12 21:41:21 [initandlisten] exception in initAndListen: 10296 dbpath (/data/db/) does not exist, terminating
  </code></pre>
  
  <p>It was working fine just a few hours ago and now it's all screwed up on reboot. I had a lot of important data stored there and I really hope it's not all lost! I need to find that data and run mongodb on that data again. I use pymongo to interract with mongodb.</p>
  
  <p>I just saw the config file and it's storing the data in /var/lib/mongod as the dpath. Now how do I start mongodb specifying this dpath?</p>