how computers work
hard drive
hard drive
A hard disk drive (HDD), hard disk, hard drive or fixed disk is a
data storage device
used for storing and retrievingdigital
information using one or more rigid ("hard") rapidly rotating disks (platters
) coated with magnetic material. The platters are paired withmagnetic heads
arranged on a movingactuator
arm, which read and write data to the platter surfaces.