- a disk drive containing a hard disk.
- computing (on a computer) the mechanism that handles the reading, writing, and storage of data on the hard disk
- A disk drive that reads data stored on hard disks. Also called hard disk drive
The bulk of the memory of a personal computer is magnetically stored on hard disks that constitute the hard drive. Information in the hard drive is durable, in that it remains magnetically stored when the computer is turned off. (See magnetic memory.)