My son was working with his flash drive and apparently something got deleted on it. As a result he said it seems not to have anything at all on it.He's asked me to look into it, but all I csan get out of it is the message "The disk is not formatted. Do you want to format it now?"
The disk was obviously formatted previously because it's been in use to backup files. How could it have become unformatted? Is there any way to recover any of the former contents?