If you don’t remember the days we rolled down car windows, watched the Thundercats, or actually had to remember stuff because of lack of smartphones, you might have wondered (or not!) why your main drive on a Windows box is assigned the letter C:. Anyways, I will tell you that the letters A: and B: were usually reserved a decade or two ago for floppy drives and sometimes for removable media such as tape drives. Apple was the first one to release a desktop without it and it is usually credited with the floppy’s demise. However, it would be common to have a 5 1/4 inch A: and a 3 1/2 inch B: drive. Now, this raises the question, why aren’t USB thumbdrives assigned these letters? Hence, they have to fight with optical drives and secondary hard drives for other letters. It is sometimes a guess to figure out which letter my thumbdrive is assigned to (or not!).