What is Hard Disk – Hard Disk, also called hard disk drive or hard drive, magnetic storage medium for computers. A hard disk is a flat circular disk made of aluminum or glass and coated with a magnetic material. Hard disks for personal computers can store terabytes (trillions of bytes) of information. Data is stored on its surface in concentric paths. A small electromagnet, called a magnetic head, writes binary numbers (1 or 0) by attracting tiny dots on a disk that rotates in different directions and reads numbers by detecting the direction of magnetization of the dots.
What is Hard Disk
What is Hard Disk
A computer hard drive is a device consisting of multiple hard disks, a read/write head, a drive motor to rotate the disk, and a small amount of circuitry, all sealed in a metal case to protect the disk from dust. Apart from referring to the disk itself, the term hard disk is also used to refer to the entire internal data storage of a computer. Beginning in the early 21st century, several personal computers and laptops were produced that used solid-state drives (SSDs) that relied on flash memory chips instead of hard disks to store information.
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