A hard disk drive (HDD), hard disk, hard drive, or fixed disk [a] is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material.

HDDs are used either as the primary or secondary storage device in a computer. They are commonly found in the drive bay and are connected to the motherboard via an Advanced Technology Attachment (ATA), Serial ATA, parallel ATA or Small Computer System Interface (SCSI) cable, among other formats.

2024年4月30日 · A hard disk drive is a data storage device that uses one or more rigid rapidly rotating disks coated with magnetic material to retrieve and store data. Hard disks do one thing well — they provide storage space for data and operating systems.

A hard disk drive (HDD) is an internal or external computer component that stores data, such as the operating system, applications, and user files. HDDs are “non-volatile” storage devices, meaning they retain stored data even when power isn't being supplied.

2024年12月21日 · Hard disk, magnetic storage medium for a computer, Hard disks are flat circular plates made of aluminum or glass and coated with a magnetic material. Hard disks for personal computers can store terabytes (trillions of bytes) of information. Learn more about hard disks in this article.

2024年12月6日 · A Hard Disk Drive (sometimes abbreviated as a hard drive, HD, or HDD) is a non-volatile data storage device. It is usually installed internally in a computer, attached directly to the disk controller of the computer's motherboard. It contains one or more platters housed inside an air-sealed casing. Data is written to the platters using a ...

2023年9月19日 · A hard disk drive (HDD) is a hardware device used to store information like software and files. The primary hard disk in a PC is often the C drive.