As you are probably aware, Ubuntu has a regular six-month release cycle, and if you are someone like me, then you are probably regularly downloading all the Alpha and Beta versions as well as the final releases. The problem with such regularity is that this would use up an awful lot of blank CD’s that you will probably only use a few times before discarding just to install these upgrades.

Fortunately, you don’t have to burn Ubuntu CD ISO images to a physical disc to upgrade your installation to the next version. Here’s how to do it using just the ISO image, or wholly via the Internet with no ISO image or CD at all.

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