Solution: Don't format the USB flash drive yet, some files are just hidden by viruses. At this point, check whether the space occupied by the U disk is obviously reduced. If it is not obviously smaller, check the hidden file in the file resource manager, and it is possible that the file is still on the USB flash drive. If it is obviously smaller, the file should have been deleted. If the important files in the USB flash drive are lost, they can be retrieved by professional data recovery software.

1. Download a Hi-format data recovery master software from Hi-format official website, and then install the software according to the prompts.

2. After installing the hi format data recovery master, run the software and select "U disk/memory card recovery" to start scanning;

3. Select the location of the missing document, and then click Scan to find the document.

4. After scanning stops, double-click the files found by scanning under this category. At present, the software supports free preview of content, and then pay for it after finding the content that needs to be restored, so as to ensure that everyone does not spend a penny ~

5. Check the required files, click "Restore" and save them to other external disks.

Hi Format Data Recovery Master is an expert data recovery software, which supports the recovery of files deleted by mistake, files emptied by recycle bin, data recovery of various storage devices such as U disk, hard disk, SD card and memory card, and also supports the functions of recovery data preview and deep scanning recovery. Simple operation and high recovery success rate. It is very convenient to download and preview data for free.