1. First, we need to check our USB flash drive, open My Computer, right-click the USB drive letter, select the Properties option in the drop-down menu bar, and check whether our USB flash drive has zero used space.

2. I believe this will happen to most USB flash drives that have a raw USB flash drive situation.

At this time, we need to download a professional USB disk recovery software. There are many on the Internet, here I will take the top data recovery software as an example.

3. After downloading and installing, run the software. In the software interface that opens, you can select the two problem options of USB disk recovery or universal recovery.