All the files of my C drive are only 2 2G, but the properties show that 4 7G has been used, what is

You multiply your file size by 2 to get the size that you've already occupied.

In other words, there may be a backup C drive in your C drive.

There are two possibilities, one is that you have a restore wizard.

The other is that you turn on System Restore (this suggestion you can turn it off, it doesn't do much to take up the hard drive.) ）

Ways to turn off System Restore:

Right-click on the "My Computer" properties, see "Turn off System Restore on all drives" under the "System Restore" tab, check it, exit after applying, and restart. Look again, the lost space is back.

There are two files hidden in the system disk and they are very large, you can open and hide them like the one mentioned above.

One is a virtual cached file and the other is a file generated by system hibernation.

The virtual cache can be set in the Virtual Cache under Advanced Settings in My Computer Properties, and can be moved to other disks.

Files generated by hibernation You can go to Power Management and disable hibernation on it.

The partition that can only be seen in disk management is the system backup disk where the system restore of the general brand machine is located.

When you surf the Internet, you use the C drive for caching! You click on the browser icon to right-click, click on properties, and you can delete temporary files and history inside, and then you can check the C drive, there must be changes!

1.It may be that the backup image file of the backup software such as ghost is occupying 2There are a large number of bad clusters (not possible).

Then you definitely don't show all the hidden files in the folder option, you have to remove the hidden system files from the purchase style.

Then you'll be able to see a lot of knocks that you won't see.

It's hidden files, virtual memory.

Have you set up virtual memory in the C drive?

Because the C drive has some hidden files that you can't see now.

You can ...... from the folder optionsShow hidden files and system files.

And then you'll be able to see it.

You should have hidden files, click on My Computer - Tools - Folder Options - View - Find Hidden Files and Folders - Tick Show all hidden files and folders - OK - You will see if there are any other files displayed.

Hello friends! When the capacity of the system partition is too low, it is likely that the virtual memory value of the machine will be too low, which will also lead to a blue screen. When such a problem occurs, we need to free up hard disk space or let the system automatically set up virtual argument memory to solve the problem.

Specific implementation method: The easiest way is to delete the temporary files in the system partition (usually C drive) and keep the remaining space of the system at about 1GB). If it is true that none of the files in the C drive can be deleted, then we can also go to "My Computer" "Control Panel" "System" "Advanced" to set the "Performance" option.

Find the "Virtual Memory" option and set the drive page file size from "Custom Size" to "System Management Size", so that you can solve the problem that the system disk capacity is insufficient and the cache is too low, causing the machine to restart with a blue screen.

Find a cleanup tool or clean it up with 360.

Done, please give me the answer. Thank you.

Virus, it should be poisoned, eat the unused hard disk space, the greater chance is poisoning.

Otherwise, there is another situation, that is, you installed a virtual machine, and was eaten by the memory of your virtual machine, because the default hard disk space of a virtual machine is generally 20g, if none of the above is the case, it is damaged, you can ** hard disk single rock cluster early yuan test, to see if there is a 20g unit storage for you to break, try to fix it, if you can't be rough, just reinstall the system, remove the bad cells,

Some system folders are hidden by default, you have to show all hidden files in the folder options, and you have to remove the check box for hidden system files.

1. First of all, you look at the 7G folder, not all the files of the C drive, such as Windows. This is the core part of the system, just look at the amount of space it occupies.

2. When you install the software, is the installation directory installed by default? If so, it is normal for the C disk to have no space, and it is quite complicated to organize the C disk in this case, so it is recommended to reinstall the system. Because it is easy to cause the C drive to be abnormal, resulting in a system crash.

3. Hidden files and Trojan virus programs, you can see if there are hidden files.

PS: You can take a look at the size of each folder and see for yourself what is wrong.

Hope it helps.

It is estimated that there is a lot of software that has hit the C disk, and it has been removed and hit other disks.

Systemic errors, take the computer to fix it.