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Possible Duplicate:
Update manager doesn't offer an upgrade from 11.10 to 12.04

I am a Ubuntu 11.10 user and my update manager doesn't show the availability of the new 12.04 release. What should I do in order to upgrade my system?

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marked as duplicate by Mitch, Eliah Kagan, jokerdino, Martin Owens -doctormo-, htorque Aug 18 '12 at 6:46

This question was marked as an exact duplicate of an existing question.

Run do-release-upgrade in a terminal

Check here! This links describes how to upgrade from 11.10 to 12.04.

How do I upgrade from 10.04 or 11.10 to 12.04?

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