I have downloaded Ubuntu 12.04.01 from the Ubuntu site and tried to make a LiveCD, LiveDVD, LiveUSB but while finishing burning it got some curruption. CD/DVD did not come out automatically. It says take it out mannually. When I pull out manually it shows some curruption occurred.
What is the correct way to create a LiveDVD or LiveUSB for upgrading my previous version. And what is the method to Upgrade with this LiveDVD or USB.