I use Ubuntu 12.04 LTS on a dual boot system. I upgraded my PC's motherboard to Gigabyte GA-H77M-D3H motherboard. 12.04 no longer sees the network interface ! I now want to upgrade to 13.04. Is there a 13.04 download I can put onto a DVD and then upgrade 12.04 after I have booted up 12.04 ?
Boot with the live CD/DVD of the new version. If this can see the network card it should connect to the internet and give you the upgrade option when you select install.
Yes you can upgrade to 13.04 using a DVD instalation. Just put the DVD in as you would normally install ubuntu, and when this screen apears: Just make sure you chose to upgrade.