I have the ISO image of the OpenSuSE 11.0 installation DVD, and I’m running OpenSuSE 10.3. Is there a way to use that image to upgrade to 11.0 without actually creating the DVD (or even using any other CD’s, DVD’s, etc.)?
have a read of this, should give you some ideas Installation without CD - openSUSE
what deltaflyer said. But: If you have the chance to burn a DVD of the ISO, I’d go that route. It’s fast and easy. By the time you read the instructions on how to install without a DVD, you probably burnt a DVD
There’s also the totally unsupported way of updating the running system described by Benjamin Weber here: