I realize this might be a stupid question, but I'm currently working on virtually a complete PC rebuild. Bought a prebuilt IBUYPOWER Trace 930 back in 2018 and have decided to replace the PSU, motherboard, CPU, GPU, and have decided to add another hard drive as im running out of room on my 1TB. Pretty much all im keeping is my SSD, my 1 TB hard drive and the case. I was wondering if my SSD will keep my my OS installed or will I have to reinstall it after the build is completed. I was also wondering if it would be a problem having two hard drives within my computer, and if I will be able to access them both while playing, because one of my friends stated I would only be able to access one as I was playing because it was the "boot drive" as he stated, and I question the legitimacy of his claim lol.