Why is there only 74G after 80G hard drive partition

Every hard disk is like this, the manufacturer takes 1000b as 1kb, and the earthlings know 1kb 1024b, and so on, the manufacturer's algorithm: 1mb 1000kb = 1000b 100000b

System algorithm: 1MB 1024KB=1024 1024B 1048576B

Manufacturer algorithm: 1g 1000mb 1000 1000kb 1000 1000 1000b 100000000b

System algorithm: 1G 1024MB 1024 1024KB 1024 1024 1024B 1073741824B

The 80G hard disk produced by the manufacturer is 80 1000000000B 8000000000B

The algorithm for converting to Windows is 800000000000b 1073741824=

And the 80G hard disk manufacturers are also a slight number.

So an 80G hard drive should be 76 points and more than G, your hard drive is normal, everyone is like this.

The manufacturer's algorithm is: 1000* is calculated.

And the algorithm of the computer program: 1024* is taken to calculate.

So there's a difference.

The previous (accurate) algorithm was: 1GB 1000MB 1MB 1000KB in sequence.

Now the simplification goes like this: 1GB 1024MB 1MB 1024KB

Two standards, very simple.

Upstairs are all correct, you should choose one!

The algorithm is not the same Manufacturer: 1GB 1000MB 1MB 1000KB The computer is calculated like this: 1GB 1024MB 1MB 1024KB

It's normal, some are occupied by the system. Cache usage.

The larger the hard disk capacity, the more it will be occupied

The conversion is different, and the size is normal.

The manufacturer's algorithm is: 1GB 1000MB 1MB 1000KB in turn.

Our usual algorithm is: 1GB 1024MB 1MB 1024KB

Therefore, it is normal for errors to occur.

Your hard disk is normal, because the manufacturer's hard disk is produced by 1g=1000m, 1m=1000k conversion method, and our machine uses 1g=1024m, 1m=1024k conversion method, so our hard disk shrinks invisibly.

500G hard disks are only 470G in the system, only normal.

The main reason for the discrepancy between the labeled capacity of the hard disk and the actual capacity is that the definition of the hard disk capacity by the hard disk manufacturer is different from the algorithm of the operating system for the hard disk capacity, so there is an error between the identified capacity of the hard disk and the actual capacity displayed in the operating system.

Hard disk manufacturer's standard: 1GB = 1,000MB; 1mb=1000kb，1kb=1000byte。Algorithm of the operating system:

1gb=1,024mb，1mb=1024kb,1kb=1024byte。For example, if an 80GB hard disk is used as an example, the calculation is as follows:

Hard disk manufacturer's standard: 80GB = 80,000MB = 80,000,000KB = 80,000,000,000byte; Operating system algorithm: 80GB = 81,920MB = 83,886,080KB = 85,899,345,920byte; The capacity of the 80G hard drive shown in the operating system is:

There is also a built-in hard disk boot program in the normal disk

Isn't computer literacy still widespread?

There is a 24M difference between the hard disk and the 1G in the computer.

What do you mean, can you be clear?

To put it simply, a hard drive is nominally 500g, but does it actually have 500g for you to use.

The hard drive manufacturer's definition of hard disk capacity is different from the operating system's algorithm for hard disk capacity, resulting in an error between the disk identification capacity and the actual capacity displayed in the operating system.

The standard of hard disk manufacturers: 1GB = 1,000MB, 1MB = 1,000KB, 1KB = 1,000byte

Operating system algorithm: 1GB = 1,024MB, 1MB = 1,024KB, and 1KB = 1,024byte

A 40GB hard drive is calculated as follows:

Hard disk manufacturer's standard: 40GB = 40,000MB = 40,000,000KB = 40,000,000,000byte; Operating system algorithm: 40GB = 40,960MB = 41,943,040KB = 42,949,672,960byte The capacity of a 40G hard drive shown in the operating system is:

An 80GB hard drive is calculated as follows:

Hard disk manufacturer's standard: 80GB = 80,000MB = 80,000,000KB = 80,000,000,000byte; Operating system algorithm: 80GB = 81,920MB = 83,886,080KB = 85,899,345,920byte; The capacity of the 80G hard drive shown in the operating system is:

Taking a 160GB hard drive as an example, the calculation is as follows:

Moreover, after partitioning and formatting, the system partition table will also occupy some space on the hard disk, so it is normal for the total capacity displayed by the operating system to be different from the model capacity of the hard disk.