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I was under the impression that upgrading to Ubuntu 14.04 was supported from all version between and including the previous LTS release (12.04). Why is it then, that update-manager (with and without -d option) will only offer to upgrade to version 13.10 from my Ubuntu 12.10 system? Even that only works when I change the updater settings from "For long-term support versions" to "For any new version."

Is it only possible to upgrade to 14.04 via 13.10?

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marked as duplicate by karel, Radu Rădeanu, Eric Carvalho, Warren Hill, Danatela Apr 25 '14 at 2:42

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You will probably get a cleaner system if you first backup your personal data then install 14.04 clean and finally restore your personal data from your backup. – Warren Hill Apr 24 '14 at 12:12
This is a valid approach, but not preferable, due to the downtime involved. I'll be making a complete backup before attempting the upgrade, so if something goes completely wrong during the upgrade, I can always fall back on a clean install and restore from backup. – Avian00 Apr 25 '14 at 8:12

Did you try

sudo apt-get update
sudo apt-get dist-upgrade
sudo do-release-upgrade

This should upgrade your system to 14.04 from 12.04 without any problem

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I don't believe this works from 12.10. It only offers me release 13.10, just as update-manager does. – Avian00 Apr 23 '14 at 13:49
@Avian00 - it works; I've just done it myself. – pomaxa Aug 25 '14 at 15:21
Can't update since I got Not Found message for all ubuntu quantal repos. W: Failed to fetch… 404 Not Found [IP: 80] – installero Sep 7 '14 at 9:14
@Phani: You get the 404 because Ubuntu has removed Quantal from its normal mirrors. DigitalOcean still has a mirror of Quantal at Replace the URLs in your /etc/apt/sources.list with this and you will be able to update Quantal to the last packages released. – cookiecaper Sep 23 '14 at 8:47
FYI if do-release-upgrade results in command not found you need to apt-get install update-manager-core – Wes Johnson Sep 25 '14 at 23:17

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