What is a disk

Disk refers to a memory that uses magnetic recording technology to store data. Disk is the main storage medium of computer. It can store a large amount of binary data and maintain data without loss even after power outage.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

Disk refers to a memory that uses magnetic recording technology to store data. It is the main storage medium of computers. The disk used in early computers was a floppy disk (Floppy Disk, referred to as floppy disk), and the disk commonly used today is a hard disk (Hard disk, referred to as hard disk).

Floppy Disk

Floppy Disk is the earliest removable media used in personal computers (PC). Reading and writing floppy disks is done through floppy disk drives. Floppy disk drives are designed to accept removable floppy disks. The most commonly used one today is the 3.5-inch floppy disk with a capacity of 1.44MB, which was once very popular. Later, due to the emergence of USB flash drives, the application of floppy disks gradually declined until they were eliminated.

Hard Disk

The hard disk is the main storage device of the computer. The hard disk (called hard disk in Hong Kong and Taiwan, English name: Hard Disk Drive, HDD for short, full name Winchester hard drive) is composed of one or more aluminum or glass discs. These discs are covered with ferromagnetic material.

Most hard drives are fixed hard drives, which are permanently sealed and fixed in the hard drive. Early hard drive storage media were replaceable, but today's typical hard drives are fixed storage media that are sealed within the hard drive (except for a filter hole to equalize air pressure). With the development, removable hard disks have also appeared, and they are becoming more and more popular, and there are more and more types. The hard disks installed on most microcomputers are called "winchester" technology because they adopt Winchester technology. "Chester hard drive", or simply "warm drive".

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