Yesterday I had put together my new machine and installed Windows 10 via USB, in UEFI. I have 2 hard drives, my new one which'll be the main one and another one from my old computer plugged in, to transfer files.
Apparently the boot loader had installed itself on the old computers hard drive, as it had Windows 7 on it, though 10 is on the new one. I need to get it to where it can boot on the new hard drive itself. How can I do that?