Disk Indicator v17.1 is now available. Changes are summarized below.

What’s New

• Add menu for disk usage

• Moved Mount ISO option to ISO menu. Improved the mounting logic for Linux ISO images. Directory will be opened after mounting the ISO.

• Added icons for menu items

• Added option to set tray icon from the Settings window

Installation

Ubuntu and derivatives (Ubuntu, Linux Mint, etc)

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

For older Ubuntu releases which have reached end-of-life, you can install from the DEB files linked below.
indicator-diskman-latest-i386.deb (32-bit)
indicator-diskman-latest-amd64.deb (64-bit)