How do I delete Windows after an Ubuntu install?
back up your data and use instructions here
Boot using the Ubuntu Live USB.
Open a terminal (Ctrl+Alt+T), and run the following commands:
sudo add-apt-repository ppa:yannubuntu/os-uninstaller sudo apt-get update; sudo apt-get install -y os-uninstaller && os-uninstaller
- After the commands have run successfully, you'll see this:
Choose the OS you want to remove and press OK.
A confirmation window will appear:
- Click "Apply" to start the removal.
Source: https://help.ubuntu.com/community/OS-Uninstaller