I have used Unetbootin on one of my USB drive, and it seems to have partitioned it some way that it's no longer recognized by any OS. It's not even listed when I turn on my computer and press F12 to list the boot options.
I have tried to use GParted and even OpenSuse Partioner but none of them were able to recognize the drive. However I'm still able to hear that sound when I plug it in, meaning that a USB device has been connected. On Windows, I can see it listed in the device manager but can't get it to work.