I have this 5 GB file, it is a .cab file, for a game, and It won't copy to my Thumb drive which is 8G. So I was annoyed at how the simple math some how does not work, and it won't copy to my empty external 250G HD either. But, it will copy to my second HD that is in my computer (Which only has 100G free space left). Anyone have any idea why in the world it would do this? The file that says it is 5G is somehow telling the device it is much larger?