I am running Vista Home Premium and want to do a "repair install." I have an OEM DVD with Vista. I have performed the repair process in the past (I think it was called Upgrade), but now that I have installed SP1, it won't work. I slipstreamed a DVD with SP1 according to the tutorial, but it still indicates that the existing version of Vista is newer than the one on the slipstreamed DVD and says that the upgrade functionality is disabled.
I noticed on the tutorial that you need a Retail version of Vista to slipstream with SP1. Is the OEM version different than the Retail version? Is that why I cannot do a Repair Install?
Thanks for your comments.