title: mount point /dev/sdb1/mnt is not a directory
body: <p>I'm partway through an installation of Arch Linux and, following the online instructions, I'm mounting /dev/sdb1/mnt.</p>
  
  <p>When I input</p>
  
  <pre><code>mount /dev/sdb1/mnt
  </code></pre>
  
  <p>it returns</p>
  
  <pre><code>mount: you must specify the filesystem type
  </code></pre>
  
  <p>Using both auto and ext4 (my filesystem type, I'm fairly certain)</p>
  
  <pre><code>mount auto /dev/sdb1/mnt
  </code></pre>
  
  <p>I get</p>
  
  <pre><code>mount: mount point /dev/sdb1/mnt is not a directory
  </code></pre>
  
  <p>What is going on here?</p>