Hello, what is the good way to make one two-tier iso (32 bits + 64 bits) of Windows 8.1? If I make at first the iso, I cannot modify her(it) any more with wintoolkit, which cannot work any more one install.wim If I modify at first my 2 iso and what I make then " all-in-one disk creator ", my iso does not work (unable to find d:install.wim). Has anybody already made it with success?