Understanding disks
As you may know, a disk is a physical component or an object in which data is stored. However, storing data involves writing and reading data on a disk. Therefore, to become familiar with disk types, it would help if you get acquainted with their classifications and technical specifications. That way, you will understand any disk type’s storage features and characteristics. We will learn about the HDDs first.
HDDs
The HDD, as shown in Figure 9.12, is considered a secondary storage computer component that uses an electromotor to spin the disk. It also contains a magnetic read-and-write head and metal platters that permanently store data. Each platter includes tracks and sectors. The starting point for storing data in HDDs is the outer track. The read-and-write head is located above the disk platter at a distance of microns, thus never touching the disk. If it does, then physical damage occurs.
The data storage capacity is measured in bytes (nowadays...
