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I have had the last Ubuntu distro (10.something) installed for a year and love it.

But I have run in to an issue when I tried to upgrade it to the latest one it did not work and there has come some serious issues now with almost everything and I want to remove Ubuntu completely and install the new one.

How can I remove the operating system (I don’t mind formatting the whole thing if that’s what’s needed).

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2 Answers 2

The graphical installer will ask you what to do. Among those options is to replace your existing Ubuntu installation. I think it'll even keep your files. As always, though, it is a good idea to have backups when you're doing things like that. But I think you should figure it out if you just boot 11.10 graphical installer.

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If you intend to wipe the operating system and all data on the harddrive, then you should try Dban (Darik's Boot and Nuke).

Go to http://www.dban.org/download to download a bootable ISO image, burn it to a CD-R or DVD-R media, and boot from it. Follow the on-screen instructions.

Beware that this will remove all data on the harddrive!

Dban is a tool commonly used to securely erase data when decommissioning a system.

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