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I have an installation in my machine (my version is 9.10 Karmic) and I got a warning to Upgrade to a version 10.04, to me it is okay, and I would like to upgrade to the 10.04, but here is my question.

If I do, what will happen to my system of files? All my files? My programs, my apache configuration? All my servers.. Does everything reset to default? Will I lost all my data? Because if YES, will lost everything, why such a warning appears to me?

Then the best solution is, format everything and install a brand new ubuntu version 11.

Otherwise I still using 9.10 Karmic version,and just update normally as I'm required..

What is the best to do on this situation?

Appreciate any help!

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up vote 2 down vote accepted

Generally speaking, you shouldn't lose anything if you upgrade. Make a backup beforehand, though! See the guide here on how to upgrade. You're going to have to do it step-by-step (9.10->10.04...).

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The only problem that I forsee is that during the upgrade something dies. Now realistically, from 9.10 -> 10.04, such death is rare. However, if you do the other step-by-step upgrading (10.04 -> 10.10, 10.10 -> whatever), the risk that something dies increases, and that risk gets higher with each upgrade-upon-upgrade. – Thomas Ward Mar 14 '11 at 17:09
Thanks guys, anyway I ll upgrade to 10.04. and after tell you how it was.. – B4NZ41 Mar 14 '11 at 19:09
@Fernando: You might just be better off backing up your data and then installing fresh, it might avoid you having to deal with broken packages during the upgrade-upon-upgrade process. :/ – Thomas Ward Mar 14 '11 at 19:52
And what about the apache, mysql, php and all other stuffs that do not come by default with ubuntu ? Does everything will be lost?? – B4NZ41 Mar 14 '11 at 20:15
The upgrade shouldn't remove those programs unless something really bad (=bug) happens. The upgrader will tell you what programs it's going to install/update and delete. Your settings will be untouched, if the upgrader needs to update a config file, it'll ask for your permission first. – papukaija Mar 14 '11 at 20:46

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