I think you can either use pc connect or disk edit.
Both functions come available when you press the media button..
I fdound this one in the last section of the sd9 manual..
Happy to be helpfull..

Personally. I was looking in teh manual for the multi channel audio support..
Which is a very interesting feature..
Cant find anything tough in the manuall
I remember it as being advertised as part of the sd7..so i guess it should also be in the sd9..