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I've been running an Ubuntu desktop for a couple of years. I regularly update the security and recommended updates via Upgrade Manager. However it seems I didn't have Upgrade Manager set up to tell me of Ubuntu updates. Having realised this post the April-2013 loss of support for 10.04, and changed the settings, it now offers me an upgrade to 10.10. However when clicking on it and following the upgrade instructions, I consistently get the following error message:
"Failed to fetch. Fetching the upgrade failed. There may be a network problem."
Now I don't necessarily want 10.10, and would prefer to skip to the latest one with the longest duration of support available, which appears to be 12.04 LTS.
Bearing in mind I have very few IT skills (Ubuntu was set up for me by an IT expert to temporarily replace a very slow running Windows Vista, but I loved it so stuck with it ever since):
- Can someone tell me how I can upgrade directly to 12.04 LTS?
- Is there any danger of losing existing files etc that I should be aware of in doing so?
- And - less importantly, but if anyone has time to explain - what exactly is the difference between supported and unsupported (ie. what would happen longer term if I just carried on using 10.04)?