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Possible Duplicate:
How to upgrade Ubuntu from an ISO image

I have downloaded & burnt iso of Ubuntu v11.10 & was trying to upgrade my current installation (running v11.04) when i ran into a strange issue. The installer (when i boot from media) does not detect my existing Ubuntu setup. It detects my Windows 7 installation & gives me 3 choices but NO upgrade choice. When i try upgrading in (while running) Ubuntu - it tries to download the upgrades again.

Isn't there a method where i can upgrade my existing installation just using the media?

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  • Ubuntu requires anexisting installation to be updated befire it can be upgraded to next version. Try $ sudo apt-get update && upgrade from Terminal. If it gives issues, please try the commands one after the other as : fist, $ sudo apt-get update and then $ sudo apt-get upgrade. – Ninad Nov 15 '13 at 06:37

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