
Remember, back in the day, before USB drives became common place, you had to use those weird square disks? We called them floppies, and they had about as much storage capacity as my current computer has in its power switch alone. One of the problems with floppy drives was that it was impossible to determine whether there was a floppy in the drive without actually spinning up the drive. Windows 95
almost had a feature that could
detect whether or not there was a floppy in the drive without spinning it up.