I am Ashish Dewan from India, looking towards you for your valuable suggestions regarding installation of dual OS. I am using Windows 8.1, and I want to install Windows 7 also, the reason being Windows 8.1 is not supporting to some software I am using. I know many of you are able to help me in this regard. Please, provide your valuable suggestions quickly to make things easier for me.I have one more query. Could you please let me know the difference between Windows 732 bit and Windows 764 bit?