So i got a blank 750 GB HDD on a laptop. My intention is to install Windows 8.1 only on a single partion like a 100 GB for the system only to use it for my university programs etc. and to use Ubuntu for personal use like browsing, listening to music. For example Windows 8 to be only 100 GB and the other free space to be for Ubuntu and i know Ubuntu has to be on separate partiotions like the swap, / (root), /home. Can you tell me how to do it or a walkthrough?