I have 2 externall hard drives i keep files on...1 is my main the other a back up
I deleted the dat file in the main by accicdent the other day and ran synchtoy on ECHO which i thought would act as normal and bring the back up external up to date with the main external
How ever it did create all the new files but didnt delete a lot of the old stuff
Question is... is there a way to exactly mirror what is on my main external with out deleting everything on my back up exteranl and simply copying across?