title: Python kivy: how to use filechooser access files outside C drive
body: <p>I am a total beginner in Kivy.</p>
  
  <p>When I tried to re-implement the tutorial on the <a href="http://kivy.org/docs/api-kivy.uix.filechooser.html#" rel="nofollow">kivy.uix.filechooser</a> module, I could only access the files on my C: drive, but not the other drives. I tried to look for where the filechoser roots, but to no avail.</p>
  
  <p>Is there any way to access the other drives?</p>