I have backed up on a external hard drive 500GB of data however this data i wish to refresh with new content.
My problem that makes it very time consuming is how do I know, or remember to be more accurate, which folders on my pc disk have the new data i wish to pass over to the "old" data contained in the external hard disk so that I won't have to click 1000 times the box window "do you wish to rewrite these files". Basically i want to know how to copy over ONLY the new data but of course not manually because 1)it will take a long time 2) i cant remember which is old and which is new.
My problem that makes it very time consuming is how do I know, or remember to be more accurate, which folders on my pc disk have the new data i wish to pass over to the "old" data contained in the external hard disk so that I won't have to click 1000 times the box window "do you wish to rewrite these files". Basically i want to know how to copy over ONLY the new data but of course not manually because 1)it will take a long time 2) i cant remember which is old and which is new.
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