synchronize backup files? How?

In order to save a USB key, I want to synchronize with an external hard drive or internal on my home desktop PC. The synchronization should only check for different folders and make them idential. How? I don't want to do it on my network (if possible). History: in the past, my USB STICK I store all my data on 'died '. Fortunately, I had a backup and copied all the files and folders to a new USB key. I don't want to overwrite (or delete and copy again) my backup hard disk because it takes hours. (8 GB). I thought that there is a synchronization program that scans the identity of the 2 files and everywhere where the differences are detected it will be the same as source target. When I take my source USB and insert it into ANY PC, I want to delete or create files and folders, and change files. At home I want to synchronize with my backup on my desktop or my external hard drive.

If you haven't learned your lesson, huh?  my USB STICK on that I store all my data "is dead".

There are a number of applications that synchronize files and folders (Windows Live Mesh is not available for XP, independently of the suggestion of the "Support Engineer").

Who might do the trick for you is Microsoft SyncToy.  It is a "power toy" developed at Microsoft.  Like all the Microsoft power toys, it has not supported by the company (see warning below), but it seems to have stabilized and stuck around for a while unlike the typical Microsoft 'Live' apps, which seem to change and become obsolete, then blink your you eyes.

Microsoft warning:

Note: We took great care to make sure that this tool works as it should, but it is not part of Windows and is not supported by Microsoft Technical Support. For this reason, Microsoft Technical Support is unable to answer questions about SyncToy. To talk to other users and contribute your comments on your experiences with SyncToy, please use the SyncToy forum at http://social.microsoft.com/Forums/en-US/synctoy/threads.

Tags: Windows

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