I have been playing with a third party (don't want to reveal )sync tool lately to backup and sync my personal and official content between my laptop and external USB harddisk. Initially I was very much impressed with the tool and loved it, until I came across with the limitation and as always the trial period which forced me to look for an alternative.

The free tool I discovered was SyncToy which you can download it here. The tool is excellent and does whatever I wanted. check it out!