Hi Folks, I have an Acer Predator 3620-UR318. Bought it new and was pre-loaded with Win 8 but ended up unwittingly stuck with 8.1 and can't get rid of it so now have lost some features. I think I'll have a few questions to come on the forum but right now I'm having a major problem with disk space. This desktop has a C: drive SSD of 128GB and a D: drive of 2TB. I'm in dire need of trying to figure out how to set the D: drive up as the main drive or something because the SSD has only a paltry few GBs left and it's sputtering where I have a nice 1.5TB still empty and happy to be used. It's been a few years since I've been under the hood so to speak...but I'm ready to tweak 😉 Can someone help with the info or a solve or two?