I am not a techie or don't know much about the system. But once I tried dual booting my system. I searched how to and did what it was recommended, i.e, made a partition using Windows and then tried to install. But during installation it never showed me the partition I created. I asked my friend and he somehow installed Ubuntu in my laptop . Later I found out that it just erased my D drive in Windows and left 200 GB on my hard drive unallocated. I guess I have the weirdest laptop .