Hard Disk capacity Description

Operation Steps:

The computer's nominal hard disk capacity differs from the hard disk capacity shown by the operating system, for example: a nominal 40GB hard drive is less than 40GB in the operating system, which is not an error or problem with the computer's hard disk installation, but is a normal phenomenon in the computer field, mainly because:

A. The hard disk manufacturer and the computer operating system calculate the size of the hard drive the different hard disk manufacturers use 1000 in labeling the hard disk capacity, namely: 1G = 1,000mb,1mb =1,000kb,1kb = 1,000byte; Operating system in the identification of hard disk capacity is used in 1024, that is: 1GB = 1,024MB,1MB = 1,024kb,1kb = 1,024byte. The nominal capacity of your computer's hard disk is based on the hard disk manufacturer's calculation criteria, because the hard disk manufacturer and the operating system use different standards for calculating the hard disk capacity, resulting in a difference in the size of the hard disk's nominal capacity and the capacity shown in the operating system.

For example, a hard disk is nominal xg, and even if it is not used at all, the capacity it displays in the operating system is only: Xx1000x1000x1000/(1024x1024x1024) ≈xx0.931 G.

If part of your hard disk has been used for a specific purpose, the capacity shown in the operating system will also be less than xx0.931g.

B. Part of the hard disk is used for a specific purpose

With a key restore function, the hard drive in the factory has been divided into a specific partition, to store the hard disk image files and a key recovery program files, the specific number of hard disk space due to the computer model and installation of the operating system and software are different. For security reasons, this partition can only be seen in Disk Management, which is usually called a "hidden partition" or "service partition." In addition, after the hard disk is partitioned or formatted, the system takes up some space on the hard disk and provides it to the system files.

For these reasons, the available hard disk space you see in the operating system is always less than the nominal capacity of your computer's hard disk.