Why my U disk cannot save any files now

[ScarJoy]

Whenever I put files into it, it has only left the file's name, but the file is all empty.

[HansV]

What is "U disk"? A USB drive?

[ScarJoy]

Yes, Hans. USB drive.

It will only have empty file left, although it takes a long time to transfer the files.

[Claude]

Have you re-formatted the USB Drive ?

[ScarJoy]

No,Claude. All the previous files are still in USB Drive. Just cannot add new files into it.

[HansV]

What happens if you copy one of the 'empty' files back from the USB drive to your hard disk? Is it still empty?

[Claude]

How about copying all the files off the USB drive, re-format and copy them back ?

[ScarJoy]

I tried, it is empty.I use antivirus software to scan, no virus. Am I need to buy a new one?

[HansV]

Getting a new USB drive may be your best option.

[Rudi]

I tried, it is empty.I use antivirus software to scan, no virus. Am I need to buy a new one?

If you don't mind loosing everything on the disk and just want to fix and reformat it for new data, you can follow the steps in this video. Doing this will wipe the USB, set up a new active partition and then format it to FAT32 or NTFS. After this it should be as good as new!

[ScarJoy]

Thanks! That's works. I format my U dis, and put all previous files into it again, thanks all.