Can't mount removable drive after formatting to ext
<p>I'm trying to install Crouton on a USB Stick for Chrome OS.</p>

<blockquote>
  <p>Procedure</p>
</blockquote>

<p>First thing I did was unmounted:</p>

<pre><code>sudo umount /dev/sda1
</code></pre>

<p>Then I formatted to ext:</p>

<pre><code>sudo mkfs.ext4 /dev/sda1
</code></pre>

<p>Then I try to mount again by running the command:</p>

<pre><code>sudo mount /dev/sda1
</code></pre>

<blockquote>
  <p>Error</p>
</blockquote>

<p><code>mount: can't find /dev/sda1 in /etc/fstab</code></p>