Hello, I have a Western Digital WD5000LPVX-55V0TT0 500GB drive which came with my sony vaio laptop, in which windows 8 was installed by default. Now that I have updated to windows 10, I don't really need windows 8 but I think that sony has put windows 8 in a file which I can't see cause my drive has 436,3gb on total instead of 465. I hate storage problems can someone help me with this?