In the era of floppy disks and early operating systems like CP/M and MS-DOS, A: and B: were reserved for floppy disk drives, ...
I always use a second SSD for my game installs (although technically I have three other SSDs with games on, because I hate re-downloading them), and I think everyone should. It's not about performance ...
Reports suggest Windows 11 update KB5063878 is causing some SSDs and HDDs to fail — and in some cases, data is unrecoverable.