O'Reilly logo

How Computers Work, Ninth Edition by Timothy Edward Downs, Ron White

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 11. How Disk Drives Save Information

How Disk Drives Save Information

IN more ways than one, a computer’s disk drives are where the action is. The platters on which data is stored spin at speeds of up to 15,000 revolutions a minute—167 spins each second. Each time the hard drive is accessed to read or save a file, it causes the read/write heads to burst into a flurry of movement that must be performed with microscopic precision. So exacting are the tolerances in a hard drive—the gaps between the heads and the platters aren’t big enough to admit a human hair—it’s a wonder the drive can perform its work at all without constant disasters. Instead, it keeps on plugging away ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required