Hard disk storage is called hard disk for short. Hard disk is an important external storage device of computer, which is usually placed in the main chassis and cannot be seen from the outside. It uses a metal matrix as a carrier for recording data. Because the raw material has a certain hardness, it is called hard disk. Compared with floppy disk, hard disk has the characteristics of fast information reading speed and large information storage capacity. A hard disk can hold the contents of hundreds to tens of thousands of floppy disks. In recent years, the capacity of hard disk has been increasing, from the original one or two hundred MB to several GB and then to dozens of GB. There are hundreds of GB hard drives on the market now.
Hard disk storage system consists of hard disk drive, hard disk controller and connecting cable. At present, the commonly used hard disk is Winchster hard disk, which uses one or more irreplaceable disks as storage media, and each disk in the hard disk has a corresponding head. This kind of hard disk is also called fixed disk. At present, you can also replace the hard disk of the CD.
Hard disks are usually formatted by the manufacturer at the factory. After we buy a hard disk, we usually partition it logically when we officially use it. During use, you can format the whole hard disk or the logical partition of the hard disk.