I wonder if you have ever encountered a situation where a USB flash disk cannot be opened after it is inserted into the computer. Double click the USB flash disk to format it? Xiaobian came across this wonderful USB flash drive. It cannot be used after inserting the computer, and the prompt "Format the disc in drive J: before using it" is prompted. After pulling out and plugging in the computer for several times, it still didn't work. It was all prompted to format.

I can't help it. Then I format the USB flash disk according to the prompt. Who knows that it can't be used after formatting. （ Popular science: Generally, this situation indicates that you have bought a USB flash disk with a "black chip". What is "black film"? Black chips are the defective products eliminated by the chip factory, which are not marked with the factory logo and chip model. Then the unscrupulous businessmen use such chips as USB flash drives. You will often find that the nominal capacity on the package is inconsistent with the reality, but you can't see it in the properties of USB flash drives when you insert it into the computer. The capacity on the package is 16GB, and the properties in the computer are also 16GB. But after you really put some large files, you will find that this is not the case. It may not be enough memory for 8GB.)

The USB flash drive on the small editor shows a capacity of 31.25GB, but this is not the case

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Why is this? Because many counterfeit USB flash drives are expanded, the "memory capacity", "brand" and "model" can be modified freely through software. It is likely that you have bought a USB flash drive for capacity expansion. How about distinguishing it from others? We can use ChipGenius to detect the master model of the USB stick.
After finding the master chip model, you can go to the Internet to search for the corresponding model of mass production tools. We can fill in "manufacturer information" and "product information" by ourselves through mass production tools.

Go online to search and download the corresponding mass production tools

Open and download the mass production tool of the corresponding USB flash disk master chip model to modify the USB flash disk and re mass produce it.

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The "Kingston" and "igao7. com" in the picture are written by me. Everyone can write whatever they like, such as his name.

The actual capacity of the USB flash disk is 8GB through mass production tools, but 31.25GB is obviously considered to have been modified in the system (The giant pit has wood!) And this mass production tool can mass produce as many as 16 U-disks at a time. The brand and model can be written as you like, and the serial number can be automatically generated incrementally. Everyone else knows.