As long as the linebacker isn ' t sitting there waiting to murder him . Tyrod leads his WR into murder shots all the time . <| sep |> Ok we NEED a TD this drive <| sep |> Different allocation unit sizes is the most likely explanation . If your C drive has , for example , 512 byte clusters , and your external has 4 , 096 byte clusters , then the C drive will make more efficient use of space . Each cluster can hold one file , but one file can take up more than one cluster , so if you have lots of small files and a big allocation unit cluster size you ' ll end up with lots of dead space . The tradeoff is that bigger clusters means there are fewer of them to keep track of and search through when a file needs to be accessed so your system works faster . s h o u l d i s e t t h e a l l o c a t i o nunitsizetowhenformatting