I am dual-booting my system with Ubuntu 14.04(LTS) and win8.1
(followed this guide step-by-step:https://www.youtube.com/watch?v=hOz66FC0pWU)
And now i noticed i only have 20gb to store my data including some steam games which I tried to install.
So I figured i had to partition my Hard drive again but do not know how to do it the right way. On the Launcher I am informed on that HD icon that I have 728 GB Volume of space but it seems I cannot use it.