Disk indicator is a small indicator for Unity, Xfce and other desktops which displays the mounted drives. It provides options to mount/unmount regular volumes, lock/unlock encrypted volumes and mount/unmount ISO files.
Packages are available in the Launchpad PPA for supported Ubuntu releases. Run the following commands in a terminal window:
sudo apt-add-repository -y ppa:teejee2008/ppa sudo apt-get update sudo apt-get install indicator-diskman