Ever saved something from a Mac to a pendrive, then put that same pendrive into a PC? Notice all those annoying ‘hidden’ Mac system files cluttering up the drive? If you right-click on the drive in Windows Explorer and search for the following:
Check, then delete them. Bingo!
By the way, I think you get a similar load of clutter files on a Mac when you slot in a pendriveÂ from a PC too.