To create a DVD from which to install an up-to-date copy of Ubuntu, you first need to download a copy of the latest version. Once you’ve done so, you can create your installation DVD. The procedure may differ slightly depending on which version of Ubuntu you are currently using.
Insert a blank CD into your burner. A 'CD/DVD Creator', 'Choose Disc Type' or 'Blank Disc' window might pop up. Close this, because we will not be using it.