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I've tried to upgrade from 12.10 to 13.04 but it failed and result in "unstable system" or something.

sudo apt-get install -f doesn't work sudo do-release-upgrade says I'm up to date.

So I though of deleting my current unstable 13.04 Ubuntu and install it fresh new(if there isn't something else i can do), but the problem is that I have dual boot with windows.

how can I delete my Ubuntu and install it fresh new, without touching windows?

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Try sudo do-release-upgrade -d – Mitch Apr 27 '13 at 17:28
"No new release found" :(. Thnx anyway! – Shon Top Apr 27 '13 at 17:33
up vote 1 down vote accepted

The installation of Ubuntu allows you to upgrade 12.10. If you want to delete your current version select Erase Ubuntu 12.10 and install 13.04. If you just want to upgrade use the "upgrade" option

enter image description here

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Thank you very much. – Shon Top Apr 27 '13 at 17:47
Edit: there is no such option. I've read about os-uninstaller, it works but mess up the boot-loader so I won't be able to access windows after the removal of ubuntu. if I remove ubuntu and then install it again, would I be able to access windows again? – Shon Top Apr 28 '13 at 9:59
Yes that will work fine, just use something like boot-repair. I'm surprised that option isn't available. Maybe it's been taken out in the newest version(s). Strange... – Apr 28 '13 at 11:47
How did it work out? Everything resolved? – Apr 30 '13 at 17:12
Yeah, everything works. Thnx for the help ! – Shon Top Apr 30 '13 at 21:05

If you bring up software-sources either under synaptic or the standalone utility and go to the repositories section, select the updates tab and take a look under notify me of a new ubuntu version. It should read for any new version.

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if you like fresh ubuntu. You can delete ubuntu partition with gpart and reinstall ubuntu 13.04... and choose install ubuntu alongside windows

Good luck!

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Actually I think this will install a third operating system; Windows, 12.10 and 13.04 instead of replace the current version of Ubuntu. – Apr 27 '13 at 17:39

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