I recall a classic Mac OS hard drive indicator icon to the left of the Apple menu that would roughly correspond to the crunching of the physical disk. I had no

I recall a classic Mac OS hard drive indicator icon to the left of the Apple menu that would roughly correspond to the crunching of the physical disk. I had no idea what this article was going to be about, but determining behavior based on physical characteristics of the hardware is something I miss with modern, quiet machines.