After reading the internet I know that this is impossible, but still I refuse to give up. Few months ago I installed 7 Ultimate. Today I found that I have a valid MAK Key. I need to somehow convert my current installation of 7 Ultimate to Enterprise.
Pirated??? Oh My! No, it is still not activated installation. I need to convert it to be able to activate. You should install 7 Enterprise to be able to use MAK keys.
Why not just download the enterprise iso and install it? Easier than spending time finding ways to convert it.
Are you joking? This is the worst nightmare to lose a 3 months old environment. It took me 3 months to install and configure everything. There is no way I will do it all over again just to use a new key.
Nope, that won't work. Win7 Enterprise is a completely different animal unfortunately, not included in any of the standard ISOs and "upgrade" is never an install option, unless you're already running Vista Enterprise. Mod your bios or install a software method of slic emulation and enjoy ultimate.