When connecting USB memory peripherals to Mac/Apple computers, metadata or “Ghost” files are created in the memory that are usually invisible until attempting to use that memory with a non-Apple OS or hardware. These files appear as additional blank files, and can be confusing and frustrating to work around. Here are a couple of free programs that help users eject their USB memories with the metadata wiped out:
will allow users experiencing the “ghost” file issue to delete this data and
not have it pop up on their piano when attempting playback from USB.