Deleting older dual boot version

Question

I did a fresh install of 16.04 along side 14.04 last summer. I am satisfied with 16.04 and want to remove 14.04 from GRUB and free up the disk space that 14.04 is occupying. What steps should I use?

Answer 1

Try this tool OS uninstaller:

Steps:

1. boot computer on live usb
2. choose try Ubuntu

3. open a new terminal (Ctrl+Alt+T), and run the following command:

   • sudo add-apt-repository ppa:yannubuntu/boot-repair
   • sudo apt-get update
   • sudo apt-get install -y os-uninstaller && os-uninstaller

4. Use os-uninstaller to remove Ubuntu 14.04:

   • launch os-uninstaller from dash

   • choose OS you want to remove and click ok/

   • 

   • on confirmation window click Apply
   • 

Source: OS-Uninstaller