it used to work brilliantly, just like all other E2 receivers, you could choose your recording path for movies (to internal HDD for example) and choose a seperate (if you wished to) recording path for timeshifting (to USB for example)
Then the UR team decided to 'improve' things by making the recording path option a single default device option, and it hasnt worked since
at the time this change was made, the source code wasnt available, so anyone who wants to try is unable to attempt to 'roll back' the code to get it going again
it has been asked for numerous times, just like many other things m8, but it seems there has been more important fixed needed, like PIN protecting the ppanel menu etc