I installed Win7 Ultimate x86 and x64 from aio Win7 DVD and I install same programs their.now, I merge their in a dvd.I tried but anything write win7 edition choose screen and win7 setup get error when next button clicked.I'm sorry my english not good.same thing do for windows 8.1.
I install win 7 and I install office,nero, adobe etc. to win 7.After I create wim image with dism and I create win7 setup dvd with my create dism image this proccess apply for x64.but their merge a dvd.