Actually, I understand the basics of how hard drives work, my question is more specific. I'm curious as to how a computer's hard drive can simultaneously delete files, read files, and download files all to/from different places on the hard drive. It can't just be due to a fast-moving head, it can't possibly move fast enough to do all those things for multiple files at the same time, right? If it can, how in the world did engineers get a hard drive to read and write to many different places so quickly? Our ability to create things just boggles my mind!