u/Johnanonanon

So, as the title basically. I bought this PC a couple of years ago and it's been running fine, but I've just started looking under the hood a bit more than usual as I'm thinking of updating RAM and storage space. I noticed that under the performance tab in Windows my main drive C is showing up as a HDD. I noticed that it was split into C and D when I first purchased it but the D drive has like 50MB capacity while C has 932GB so I've always just treated C as my main drive assuming the guy I bought it from had partitioned it before and didn't thinking too much about it. But I recently installed a fairly performance heavy modlist that says specifically not to install to HDD and it's been running slow so now I'm wondering if this is affecting it at all?