upgrade to 13.04 from 12.10 without quantal repo

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http://askubuntu.com – I have recently been made a temporary owner of an old 12.10 Ubuntu machine so I can upgrade it to the latest(14.04). So I am trying to upgrade to the 13.04 as per ubuntu website, and from there to 14.04, but I seemed to have run into the apt-get bug: root@camolls1000774583:/etc/apt# do-release-upgrade Checking for a new Ubuntu release Your Ubuntu release is not supported anymore. For upgrade information, please visit: http://www.ubuntu.com/releaseendoflife Traceback (most recent call last): File "/usr/bin/do-release-upgrade", line 145, in <module> fetcher.run_options += ["--mode=%s" % (HowTos)