The capacity of the computer s hard disk is not concerned with the cause of defects

The size of the information stored by a computer, the most basic unit is the byte, a Chinese character is made up of two bytes, and letters and numbers are made up of one byte.

The units of capacity from smallest to largest are: bytes (B), KB, MB, GB, and TB. The relationship between them is:

1tb=1024gb

1gb=1024mb

1mb=1024kb

1KB = 1024 bytes.

Usually people use the simple name of removing the "b" at the end, so you ask for 1mb=.

The above is the answer given according to the textbook, but the theory and practice are a little different, the hardware, especially the hard disk, the way of conversion is slightly different, both the 1024 in the above formula is replaced by 1000, 24 is negligible. So in reality, when we buy a hard disk, we will find that there is a difference between the actual usable capacity and the nominal one, the actual usable capacity is smaller than the nominal one, and the larger the hard disk, the greater the difference, the hard disk manufacturer takes 1000MB as 1GB, and our Windows system uses 1024MB as 1GB, that's it.

I know why.

Because you have installed one-click restore, a certain amount of space is hidden, and also, the ** station and file allocation table also need to occupy a certain amount of space.

It may be that your file is not opened or used incorrectly, but there is no problem, I will tell you a method, you see if it works, type in the command prompt sub: chkdsk f c: Wait, you see which one is lost, you can change it, good luck.

Is there a backup, and if you make a backup, it will also be occupied.

Farmer. There is something wrong with the partitioning software you are using to repartition.

The capacity of your hard drive is not lost, you should be a 320g hard drive.

This is related to the principle of disk production, because the block of the disk is in a unit of 50MB, so the 1G = 950MB of the hard disk, but the actual operation is 1G = 1024MB, because it is convenient to calculate and simplify the production process, so the hard disk manufacturers will make it in the ratio of 950 = 1, so that there will be no scattered blocks, thereby reducing the difficulty of production.

So the capacity of the 320g hard disk will actually be, and depending on the disk, the manufacturer will also create the excess space on the disk, and the final result is your hard disk.

That's how all drives calculate, and so does my 500g drive.

It's normal.,320G hard disk,The system display is just a different way of calculating.。

It is more troublesome, and there are certain requirements for technology, if you are not very confident, it is recommended not to operate.

1.Requires the use of third-party hard drive partitioning software, such as Acronis Disk Director Suite. It's a good idea to back up your important data before using it, just in case.

2.Squeeze out the free space from partitions C and D, then merge 30G with E, and create a new partition (set to F) for the other 5G, after completion, the system will restart, perform partition modification operations, and then you can take the next step after completion.

3.Install the system with XP. The mounting position points to the F drive. Note that after installing XP, win7 will be corrupted, causing win7 to fail to start.

4.Use the win7 installation disk to start the new boot and run the installer, and select the repair win7 startup item.

That's it. Don't look at what I'm saying simply, the first step should be carefully considered. It takes a lot of time, and everything goes smoothly estimated at 1 2 hours.

Please refer to the details below for details on how to use partitioning software.

Hard disk capacity is measured in megabytes (MB), gigabytes (GB). The capacity shown in the computer is often less than the nominal value of the hard disk capacity. This is due to different unit conversion relationships.

In Win7, 1GB is 1024MB, and hard disk manufacturers usually convert it according to 1G 1000MB. So your hard drive capacity is fine. Hope it helps

It's boring to say anything else! I recommend that you copy the data and repartition it directly.

General logic: Software problems can be fixed, if it still doesn't work after partitioning, it is likely that there is a problem with the hard disk firmware or platter.

There may be a disk logic error, select the tool item in the properties of the E disk, click Disk Scan, and let Windows scan the disk.

Because there are too many files in win7, there is a lot of long space.

Categories: Computer, Networking, >> Hardware.

Problem description: My hard drive Western Digital is 80g, but the actual usage is only. Is it the way of profiteers? Or is it meant to be?

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

Hard disk manufacturers' standards: 1GB = 1,000MB, 1MB 1,000KB, 1KB 1,000byte

Operating system algorithm: 1GB = 1,024MB, 1MB 1,024KB, 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.