is it possible to install 2 version of windows 7 on same PC, but different partitions?
i want to have side by side 32 and 64 bit windows 7 versions with multiboot option.
will this guide work for my needs?
You will not be able to activate both Windows 7 installations with the same product key number. If you have a second product key to use to activate the second installation of Windows 7, then you could install it like this.
You can use the tutorial below as a guide for how, but just substitute Vista for the other Windows 7 instead.