I was finally successfull at dual booting my dell inspiron-3537 laptop. I used the Easy BCD to create a dual boot loader.
But, in gparted's menu I see this weird thing:
Now, this is weird because, my hard drive is only 500GB big. Why is this happening?
And is there any way to isolate the hard drives for ubuntu and windows? because, by default I'm seeing the 80GB disk on my unity launcher. Which I suppose was done for the c drive for windows?