So the thing is, I want to have two windows 10 installations on one hard drive. On the harddrive is already windows 10 installed. I want to create two partitions without losing data. I have no acces to the already installed windows 10. Is it possible in the windows setup to create another partition on that other drive? And if not is there any software out that that I can boot from on a usb. (I don't want to delete the old windows).