title: It is saying that the /dev/xdva1 doesn't exist?
body: <p>I am trying to see the free disk space in my ec2 instance and I am using this the command that aws tells you to use and it says that the directory doesn't exist.</p>
  
  <p>That's the command</p>
  
  <pre><code>os.system('df -hT /dev/xvda1')
  </code></pre>
  
  <p>Error Message:</p>
  
  <pre><code>df: ‘/dev/xvda1’: No such file or directory
  </code></pre>
  
  <p>When I do <code>os.system('df -hT)</code> it returns:</p>
  
  <pre><code>Filesystem     Type  Size  Used Avail Use% Mounted on
  /dev/root      ext4  5.9G  4.8G  1.1G  82% /
  /dev/vdb       ext4  1.9G   45M  1.9G   3% /dev
  /dev/loop0     ext4  526M  440K  514M   1% /tmp
  </code></pre>
  
  <p>The Instance says this:</p>
  
  <pre><code>Root device
  /dev/xvda
  
  Block devices
  /dev/xvda
  </code></pre>