What is the information recording medium in a hard disk called?

The information recording medium in the hard disk is called a platter. The platter is the medium that carries data storage in the hard disk; the hard disk platter is based on a sturdy and durable material, with magnetic powder attached to the surface of the aluminum alloy (new materials also use glass) disc, and the surface is processed to be quite smooth. . There are generally multiple platters in a hard disk. Each platter contains two sides, and each disk side has a corresponding read/write head (Head, abbreviated as H).

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

The information recording medium in the hard disk is called a platter.

Hard drive introduction

Computer hard drive is the most important 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".

The hard disk is one of the most important memories in the computer. Most of the software your computer needs to function properly is stored on your hard drive. Because the storage capacity of hard disk is larger, it is different from memory and optical disk. A hard drive is a hard rotating platter-based storage device in a computer. It stores and retrieves digital data on a flat magnetic surface.

Disk Introduction

Disk is the medium that carries data storage in the hard disk. The hard disk platter is based on a strong and durable material. The magnetic powder is attached to the surface of the aluminum alloy (new materials also use glass) disc, and the surface is processed to be quite smooth. These magnetic powders are divided into several concentric circles called magnetic tracks. On the magnetic track of each concentric circle, there are countless small magnets arranged randomly, which represent the state of 0 and 1 respectively. When these small magnets are affected by the magnetic force from the magnetic head, the direction of their arrangement will change.

Use the electromagnetic force of the magnetic head to magnetize the magnetic field directions of some designated small magnets, so that each small magnet can be used to store information. A hard drive is made up of multiple platters stacked together, separated from each other by washers.

Number of disks

There are usually multiple disks in a hard disk. Each disk contains two sides, and each disk side has a corresponding read/write disk. Write head (Head, abbreviated as H). Due to the limitations of the overall volume and production cost of the hard disk, the number of platters is limited, generally within 5 pieces. The platters are numbered from bottom to top starting from 0. For example, the bottom platter has sides 0 and 1, and the next platter is numbered as sides 2 and 3.

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