Here's the story, I tried to open our old PC and I saw a single HDD in it. But whenever I open "My Computer" it shows two storage places (C: =195gb and D: =270gb), but, but, I only have single 500gb HDD. When we bought it, it was ready to use so I don't have an idea. Can you really split a single (for example single 2TB Toshiba HDD) and make it appear as 2 in your computer (C: = 1tb and D: = 1tb)?