I am currently running a SLES11 SP3 server within a virtual machine (XEN on SLES11 SP3) and I want to upgrade the VM OS to SLES12 but I cannot figure out how to have the VM boot from the installation media. There also does not seem to be a way to perform an upgrade via the NCC (like you can with the Novell products). Any hints on how to boot my VM to the media or any links to docs on upgrading via the upgrade channel?