I checked to see if I could configure my USB drive for the Xbox so that it could hold Cbox files. But after I saw that it would delete all files, I cancelled.
But now my USB drive won't work on any computers. It always comes up with "Please insert a disk into removable disk (F:)."
I have tried changing it back to PC format by going to "Computer" -> File, clicking the icon of the drive and then going to "Format..". But it also comes up with "Insert disk".