1. Install dconf-editor. Open Ubuntu Software Center:

  • Press Windows/super key from your keyboard. Then search by typing Ubuntu Software Center, open it.
  • Type dconf-editor in the search bar & install it.

2. Open dconf-editor by typing following in a terminal:

dconf-editor

3. Go to desktop —> unity –> devices –> devices-option. The default is “OnlyMounted”. Set to “Never”.

That’s it. 🙂 Thanks to Bahar vai