My teacher is new to macs and she said that she cannot get her flash drive to work. She said that when she plugs it in her emac that it doesn't show up on her desktop or in the finder. But, when she unplugs it the device removal error comes up. I have no idea how this could be. I told her to go to disk utility and see if it shows up there. I don't remember but I think I remember her saying it doesn't show up on her Windows pc either. Any help is needed. My grades might be on there! Note: she plugged it in her Mac first.