Hello, last year I have purchased the new laptop. In this laptop, the Intel core i7 processor is connected with the SATA 250 GB hard disk is presents. I have installed the windows XP service pack2 on this drive. Now I want to take some experience about the windows 7 operating system. Can this is possible to install both windows XP sp2 and windows 7 operating system on the same hard disk. I have never liked to uninstall the windows XP SP2 operating system. Somebody please help me?