title: HTML 5 File System how to increase persistent storage
body: <p>Following this guide: <a href="https://developer.chrome.com/apps/offline_storage#asking_more" rel="nofollow">https://developer.chrome.com/apps/offline_storage#asking_more</a></p>
  
  <p>When I execute</p>
  
  <pre><code>navigator.webkitPersistentStorage.requestQuota(Number.MAX_SAFE_INTEGER, console.log.bind(console));
  </code></pre>
  
  <p>I receive output <code>10737418240 bytes (10.73GB)</code>, which is the calculated maximum size when using Temporary storage:</p>
  
  <blockquote>
    <p>(available storage space + storage being used by apps) * .5</p>
  </blockquote>
  
  <p>However, I did press OK to allow allocating more storage than that. So why don't I get the requested storage?</p>
  
  <blockquote>
    <p>An application can have a larger quota for persistent storage than
    temporary storage, but you must request storage using the Quota
    Management API and the user must grant you permission to use more
    space.</p>
  </blockquote>