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I'm trying to upgrade my system from Ubuntu 11.04 to the latest supported version. As usually when dealing with linux, I'm having a lot of fun. I have found a answer that suggests to re-map the software sources to a different location.

After re-maping, some entries remained unchanged and are now causing problems:

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu maverick partner
deb-src http://archive.canonical.com/ubuntu maverick partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu maverick main
deb-src http://extras.ubuntu.com/ubuntu maverick main

I need to re-map them too. This is what I see when upgrading before the upgrade fails:

W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/natty/main/source/Sources.gz  404  Not Found
, W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/natty/main/binary-i386/Packages.gz  404  Not Found
, E:Some index files failed to download, they have been ignored, or old ones used instead.

So where is old-release version of this server?

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1 Answer 1

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They don't exist. Just remove those lines, do a sudo apt-get update, and then continue with the upgrade.

When it's finished you can then re-add the partner repository:

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