The hard disk 20G is missing, and the computer hard disk is missing 20G, how to get it back

Hard drive manufacturers calculate the space of the hard drive in kilodigits.

On the other hand, the computer windows is calculated by 1g=1024mb.

So, you'll have so much less space.

In fact, there is so much and no less!

Don't be nervous, the general hard disk space is less, and there may be bad sectors, but I infer that your hard disk is still relatively new, and there will be no bad sectors if you use it in such a short period of time if it is not very unreasonable.

You can check it with a bad sector repair tool.

However, it will take a long time.

And it's best not to stop searching during the search period, so there is a possibility that the partitioned table will be lost!

Suggestion: Use it with peace of mind!

It is best not to format the hard drive too often, each time it is formatted, it will reduce its lifespan once.

First of all, the computer thinks that 1024MB=1G, but in fact, the manufacturer is 1000MB=1G, and secondly, the format of the brand machine is also retained, and the hidden space is also reserved, which is the part of the system reinstalled and restored.

I guess you installed one-click recovery before.,That can hide your last disk 17 to 18 G.,You can't redo the system.,You can see those two hidden partitions under PQ.,Try it.。

When you open all the hidden items, you can see that there is a folder in each disk with a lot of useless files that can be deleted.

The hard disk manufacturer calculates in kilocimals, 1g = 1000m, so it should be about 16g less.

Oh, it's only less or so.,Combined with your hard disk manufacturer,It should be right.。。。

The landlord can rest assured that the hard drive is definitely 320g without any quality problems. It may be that the landlord did not notice that due to various reasons, the manufacturers of storage hardware and the providers of system software did not adopt a unified standard for the conversion of storage space, resulting in an error between the actual space size of the storage device and the space displayed by the system software. There is nothing wrong with the hardware, it's just that the conversion method is different.

1. Conversion method of hardware manufacturers: 1g = 1000m

2. System software conversion method: 1g=1024m

So: your 320 hard drive: 320g = 320 * 1000 = 320000m = 320000000k = 32000000000b on hardware

In the system software 320000000000b 1024*1024*1024=298g

So your hard drive shows about 298g, which is correct, there is no problem, the landlord does not have to worry.

The computer hard disk may be damaged so it will reduce the storage capacity, that is to say, your hard disk has been broken for 20g, this can't be recovered, or you haven't detected the 20g, you can flash and retrieve it in the disk manager. However, the former is more likely.

320G hard disk, the actual capacity is only about 290G, because the program of the hard disk itself also takes up a certain amount of space, such as partition tables and the like, so if yours is around 290G, it is normal. No need to report the crime.

Use the partition wizard to see the partition situation,thinkpadsl400cn1 hard disk is 320g,You can take a look at the capacity of more partitions add up,But the standard value of 320G is the standard of hard disk manufacturers,He is in 1000 units,And the system is in 1024 units,So the total amount is definitely not 320g,It's probably a little more than 300,Convert it yourself。

You read that right, this capacity is right, computers are carried according to 1024, but China's great JS hard disks are made with 1000 to carry, so, for example, the calibrated 160G hard disk is actually only 149G, and the calibrated 320G is actually only 298G.

Friend: The standard configuration is 320g, and the actual size of the hard disk is 300g! So no matter how you try to get it, you can't find any software you use!

It's not that there's something wrong with your computer's hard drive, it's someone else's and yours!

Hide the partition with the ghost partition and it comes out! Yours should have no hidden partitions!

You didn't find that there was 20g missing after backing up, but 20g less in the first place!

There are several possible reasons for this:

First, it's your motherboard problem.

1. Confirm whether your motherboard is a motherboard before 2000; How to confirm: Check your motherboard model online. If it has been discontinued or just can't be found, you should be able to determine that the motherboard is too old, and the upper limit of the BIOS of very old motherboards is very low, and the capacity of the hard disk that the motherboard can recognize is only as large as the upper limit.

2. There may be a problem with the BIOS settings of the motherboard, after restarting the computer, press the DEL key to enter the BIOS (BIOS means basic input and output system, which is the main software setting and storage system of the motherboard, and the main function is to match the hardware system with the software settings and save the basic setting information) (if it is a brand computer, to enter the BIOS is to press other keys: Dell is to press the F2 key; Lenovo is to press the F1 key; There are others by pressing the F12 key). Look for the "Type" and "Mode" settings in the Standard CMOS Setup, change them to Auto, save them, exit and restart the computer.

Second, it is the reason for the hard disk itself.

3. Make sure you have something like a jumper cap on your hard drive.

Before 2000, the old hard disk used the IDE data cable, and the jumper hat was used to distinguish the master-slave disk and the capacity, and the serial port hard disk used now generally can't see the jumper cap, and the capacity, master-slave relationship is automatically identified.

4. Make sure that your hard drive is loud when it reads, if it is, it may be that your hard drive has bad sectors or the partition table is corrupted. If there is no important data in the hard drive, repartition and format the disk. See if you can recognize the capacity of about 220g, if you can recognize about 220g, it means that there is no big problem with your hard disk, why is it normal to recognize the capacity of 250g only about 220g?

You can find the answer on the Internet.

Third, it is the problem of hidden partitions.

5. If your hard disk is only used as a slave disk (that is, there are two or more hard disks), it may be that some partitions of the hard disk you are using as a slave disk are set as hidden partitions and only one partition is read. I have encountered in the past that some brands of machines (IBM, Lenovo, etc.) and use some special system backup software (one-click restore, restore wizard) hard disk will separate a hidden area for data backup and system restore function mapping area.

Fourth, it is a problem with the operating system.

6. If all the above problems are ruled out, and you happen to use the capacity to view in the system from the disk is this value, it may be a problem with your system. Try it again on a different computer or re-ghost a system and take a look.