[http://karnatakaeducation.org.in/KOER/en/images/e/eb/Ubuntu_14.04_Installation.pdf Ubuntu Upgrad from 12.04 to 14.04 or Erase disk and install] | [http://karnatakaeducation.org.in/KOER/en/images/e/eb/Ubuntu_14.04_Installation.pdf Ubuntu Upgrad from 12.04 to 14.04 or Erase disk and install] |