Should I Dual Boot windows 8.1 & windows 7?

I have lenovo G570 with original windows 7 home basics with i3 processor,3gb ram and a 500gb hard disk. I don't want to delete windows 7 but wants to install windows 8.1(pirated).so i'm thinking to install windows 8.1 too on a hard drive. I just wanna ask that will windows 8.1 work perfect with windows 7 home basic on my laptop and should i install 2 windows on my laptop.

Why? What's the point of installing the Windows 8 if you are going to keep using Windows 7? If its just for the fun of it, why don't you just download the FREE Windows 10 (kind of beta) and put that in the other partition… You are only going to play around with it, and this way its legal. And you are ahead of the curve as far as knowing what the next windows is like.