Carl does video editing in Final Cut Pro and can't seem to find his files on Windows. Leo says that it's likely a file formatting issue. Windows PCs can't read Mac drives. Macs can read Windows drives, if its formatted in FAT. Leo suggests reformatting the drive on Windows to EXT-FAT. That way both platforms will be able to read it. Carl should copy the data off, format the external drive and then put the data back on. That way he won't need special translation software to read it.