Could you please tell me if it is possible to install Windows 7 32 bit and 64 bit on the same machine? Currently I am using Windows 7 32 bit. Now I would like to dual boot Windows 7 64 bit. If so, please let me know the procedure. The reason I want to install 64 bit becuse I have 8 GB RAM and in 32 bit Windows maximum 4 GB can be used efficiently and other 4 GB remain unused.