The folder size in the USB flash drive is dozens of GB. The folder size is garbled and cannot be deleted.

The folder size in the USB flash drive is dozens of GB. The folder size is garbled and cannot be deleted.

 

Today, I inserted a USB flash drive on my classmate's computer and copied a video file. Later, I installed the system and used the USB flash drive to copy the driver file, but I couldn't install the copied driver file, A black window always disappears. I started to suspect that the driver file was damaged. Then I decompressed the driver file on my computer, copied the decompressed folder to my computer through the USB flash drive, and opened the USB flash drive, this folder contains some garbled files, and I created a folder in the USB flash drive. What is incredible is that the folder size has reached 11 GB, think about my 4 GB ultra disk. An empty folder can reach more than 11 GB. In addition, right-click to delete this folder and an error message is displayed, indicating that the file cannot be deleted: the source file or disk cannot be read. It seems that the only explanation is that the USB flash drive is poisoned.

So I searched the internet and found that most of the methods were to back up the data first, then format the USB disk, and even solve the problem using the GHOST Software, you can also use WINRAR to compress the poisoned folder, compress the folder, and delete the source file. However, these methods are too complicated, in addition, the overall formatting of the USB flash drive will have a great impact on the service life of the USB flash drive. After some tests, we finally found a very simple method: the windows command can solve the problem, and there is no need to format the USB disk. I personally tested and attached the operation process diagram.

 

Let's take a look at the poisoning folder in my USB flash drive:

This is the "Nic drive folder LAN folder" poisoning phenomenon in the USB flash drive:

 

Below is the poisoning phenomenon of a new folder:

 

Check the properties of the folder and find that the folder size is 11.9 GB, while my ultra disk is 4 GB:

 

 

If you delete these folders"The file cannot be deleted: the source file or disk cannot be read ." And the "file unlocking" and "file crushing" functions of QQ Computer Manager cannot delete this folder.

 

The solution is:

 

Open cmd and enter "chkdsk/f n:" To check and fix the disk (/F indicates repair, and N indicates drive letter)

 

Operations include:

The drive letter is "K :":

 

As you can see, this command will automatically detect and fix the virus folder in the USB flash drive. Just enter "Y" in one way:

 

 

Folder fixed:

 

After the fix is completed, close the Command Prompt window.

For example, we can see that the infected folders after repair are changed to unrecognized files, and the size is only a few KB:

 

 

 

 

Delete the unidentifiable files.

Is the whole process very simple!

 

(Aunt su Guan is still taking care of us. There is a power outage on time at every day. I don't want us to stay up late and learn it too late. We can only get up early)

 

If you have better methods or problems during the operation, please leave a message for discussion!