lsblk attached, as well as ujust device-info pastebin below./. If it's not mounted, then how does my system say that I have over 1TB of free space? What I'm hoping to do is to have a partition on my SSD for my OS and some games that I want to load quickly, and have my main files and games I care less about maybe installed on my HDD partition. /sda3 looks to be locked down, though, so if I wanted to do this, should I then be creating a /sda4 partition as well as separating out the partition on /sdb so that I can mount it properly?