title: CoreOS : Read-only file system
body: <p>When moving file to <code>/usr/local/bin</code> it says:</p>
  
  <pre><code>mv: inter-device move failed: 'kubectl' to '/usr/local/bin/kubectl';
  unable to remove target: Read-only file system
  </code></pre>
  
  <p>I already try <code>chmod</code></p>
  
  <p>How can the CoreOS directory be made writable?</p>