I try to use upgrade app to upgrade, but the app tell me I can upgrade 13.10 directly.
But, if I press upgrade button, then the error message occured like…
An upgrade from 'quantal' to 'saucy' is not supported with this tool.
So, I try to upgrade with terminal by
sudo do-release-upgrade
but, same error message occured.
I using 12.10 now. I want to upgrade to 13.10, but I can't upgrade 13.10, and 13.04.
——add——
I installed ubuntu 12.04 with Windows Installer, and I upgraded this to 12.10.
Best Answer
First check which versions of
update-manager-core
are installed:The result may be similar to this...
... which means, that you have installed the package from
quantal-proposed
By downgrading to the package from
quantal-updates
you should be able to upgrade to raring: