Sorry, I didn't get you.
When you say I need 1 more drive, does that mean that an external would not work and I need to create a new partition? I'm not really sure what gpt format is.
Now i have other games installed on C drive from steam and they work fine. These two games were working fine when I purchased them, I tried launching them and they worked, but a couple of weeks later when I tried to launch them they were not working. Other games that I had from before them and I purchased after them are all still working, so I'm not sure if the cause is from my computer or from the games, though I'm having different issues with each have on launch, communicating with the assistance for one game they told me about the corrupt dll.
One game is crashing on launch, those were the ones I spoke to. The other is launching, but the game window is invisible and the mouse is frozen in the corner off the screen, but i can hear music from the game, and the mouse works when I alt-tab back to the desktop. I'm not sure if it's the same issue for both of them.
Now I can backup my data and format the pc to fix these issues, but of course, I'd rather not and hope I'm able to fix it without resorting to that.