For content like that you need to configure your USB external memory in the Xbox 360 dashboard so you get a 32GB virtual memory, once you have that you can add stuff to it using etheir FSD or a PC app like Party Buffalo...However, you CANNOT get it to read stuff directly from the external harddrive (content and title updates)Games can be read from USB with XEXMenu and FSD without any problems... but... not DLC/XBLA/TU
it's the size of the sectors used for the data storage, can't explain it closer then that...
The HDD maximum size is the same for both JTAG and RGH tho
The only thing that differs between JTAG and RGH is the method to which you reach the modified dashboard
it has a lot of traffic to it with the new release, the servers are under immense load, I've never seen a game so far with 2 out of 3 public rooms full, just the way of the walk at the minute with everyone hammering the game and the servers.