Bought my grandson a hp omen model 870-213w. It has a ssd 256 gb c: drive and a 1tb D: data drive. So here's the problem. Everything that came installed and everything he has added is on the C drive. So now it is full. while the D drive is basically empty. 995 gb avail. How can I move some of the stuff from the c drive to the d drive and will it run off of the d drive since it doesn't have any systems files on it. Thanks in advance for any advice.