My HPDV9727CL laptop came with Vista 32. I created a second partition and installed (dual boot) Vista 64 to do some testing. Now I'd like to erase the Vista 32 and give the partition space to Vista 64. How can I accomplish this without losing my boot process which I am assuming is on the first partition. I don't want to do a complete wipe and re-install as that will use up an "activation occurrence".