From reading other posts... You update OES2 to OES2 SP1 by booting from the SLES10SP2 DVD, upgrading, and also pointing to the OES2 SP1 CD.. Fine in a physical world.

In a XEN based world how do you get this to work? If SLES10 + OES2 is already running, and assuming that I used ISO's hosted on DOM 0 to install. I can change those to look at the new SLES10 SP2 and OES2 SP1 Distro discs, but i cannot get the system to boot from DVD. It still boots from the disk that is already defined that has the OS installed.

How would I accomplish this in a XEN environment?