Oh the joys of being "Young, Free, and Single", I told my girls several years back, "I'm going to enjoy your inheritance while I'm fit enough to do so, and you can argue over the tech and bikes etc when I'm gone"
I'd be guessing that the 232GB contained Seagate software/tools and that before you had problems was probably a hidden partition which you wouldn't have seen unless you went into disc manager
This weeks Epic giveaway is the spirit and the mouse, thought I'd give it a play as it looks like an amusing way to pass away a couple of hours
https://store.epicgames.com/en-US/p/the-spirit-and-the-mouse-42390b