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I have tried using the update-manager to upgrade from 12.10 to 13.10. After it checks for updates, it shows that 13.10 is available and asks if I want to upgrade.

I say yes and then it downloads two files and give me an error message saying the upgrade cannot be done with this tool.

I have searched and searched. When I create a bootable 13.10 flash drive and try to install, it only wants to override my entire disk. When I try manual, things do not get much better.

If I cannot get this to work, how might I remove Ubuntu 12.10 and the GRUB 2.0 boot manager?

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You can not directly upgrade from 12.10 to 13.10 –  xangua Dec 30 '13 at 7:15
Initially, upgrade to the 13.04 before getting 13.10 –  Danatela Dec 30 '13 at 7:34

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