Games : my computer says my usb stick containing my borderlands character is empty

I am trying to edit my borderlands 2 character save from my xbox 360 my computer says the usb contains no files and i have tried multiple different usbs and multiple different game saves from different games my computer refuses to acknowledge that there are files on the usb

is there something i'm doing wrong, is there a process i have to go through in order for my computer to be able to read the game save or has xbox found a way to stop save editing all together