Download Ubuntu 11.04

Please refer to upgrade notes.
http://www.ubuntu.com/download/ubuntu/upgrade

Make sure
- there is a backup of important data (in case of reinstallation due to upgrade conflicts)
- disable all third party repositories in /etc/apt/sources.list or via GUI sofware sources
https://help.ubuntu.com/community/Repositories/Ubuntu#Third-Party_Software_Tab
- the current version is completely upgraded
- disk has enough space (since few hundred packages will be downloaded and saved to disk first)
- in case clean-up the disk (by e.g. removing older kernel images)
http://jaypeeonline.net/tips-tricks/howto-remove-old-ubuntu-kernels/

In case run in a terminal:
sudo apt-get clean && sudo apt-get autoclean && sudo apt-get autoremove
https://help.ubuntu.com/community/AptGet/Howto

Went to Natty Upgrade site. Completed "Before you start". Completed all the steps "Upgrade from 10.10 t0 11.04. Went to Systems>Administration>Update Manager. Showed system up to date. Clicked on Upgrade for Ubuntu 11.04. Release Notes page opened. Clicked on upgrade. Window came up asking if I wanted to start the Upgrade. Clicked button to start upgrade. This is where my trouble starts. Window with ERROR Message comes up, stating (could not down load upgrade), with message (The upgrade has been aborted. Please check your internet connection or installation media and try again - download files are kept. It said :failed to fetch http//samarium - - (three files) not found. Clicked close button, Took me back to Distribution Upgrade page then closed me out of up grade. Ubunyu 10.10 was never upgraded to 11.04. Don't know where to go from here. Thanks Jim

> failed to fetch http//samarium - -

Not an official ubuntu repo. Seems to be that third party repos are still enabled. Disable them first.

Where do I go to disable them, and how many do I disable?

Run system->administration->update-manager, then preferences and after loot at "repositories".

I did systems>administration>up-manager, there was no preferences and after loot (I don't know what that means) at" repositories" don't know where that is.
Thanks, Jim

Recall comment #1, link of repositories is attached there.

System administration -> Software sources

I got to that page and have no clue on what to do. Went to web site on how do do thing like uninstall and I'm completely lost.
Jim

Unmark all packages in 'Third party software tab'.

Where do I find the "Third party Tab"?

n 09/08/2011 09:55 AM, Sam_ wrote:
> Your question #170124 on ubiquity in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/170124
>
> Status: Open => Answered
>
> Sam_ proposed the following answer:
> Unmark all packages in 'Third party software tab'.
>

It's the tab 'other software' in 'software sources', which again can be found in system administration menu on Maverick.

Guts give me a break. Were do I find system source on Maverick. Do I go
to their web site. I don't have any Maverick on my system administration
menu.

On 09/08/2011 03:10 PM, Sam_ wrote:
> Your question #170124 on ubiquity in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/170124
>
> Status: Open => Answered
>
> Sam_ proposed the following answer:
> It's the tab 'other software' in 'software sources', which again can be
> found in system administration menu on Maverick.
>

Finally got it done. Thanks
Jim