What does a media file on USB flash drive mean?

[lathasetlur]

Hello,
When I try to burn a file on my USB flash drive, it says the media file should be empty, even though the USB flash drive is brand new and there are no files on it.

 

[rgd1101]

first of all, you copy file to a flash drive, you don't burn it, so maybe you are using the wrong software?