Back up from 1tb passport to 500gb book

…first time here, so…

i want to (temporarily) back up from a 1tb passport to a 500gb book,

and am having problems doing this with the WD software from the passport, 

and i do not have the original software for the book

many thanks, tim

Hi there, either you do it manually (Copy and paste out the files from one drive to another) or try a sync software that works from external drives to external drives. The software that comes with WD drives does not allow you to copy from one WD drive to another.