[bigobelix]

xcopy "c:\Users\User\Documents\*.*" "F:\Sicherung\User\Documents\" /e /r /d /h /y /i /c
xcopy "c:\Users\User\Pictures\*.*" "F:\Sicherung\User\Pictures\" /e /r /d /h /y /i /c
xcopy "c:\Users\User\Downloads\*.*" "F:\Sicherung\User\Downloads\" /e /r /d /h /y /i /c
xcopy "c:\Users\User\Videos\*.*" "F:\Sicherung\User\Videos\" /e /r /d /h /y /i /c
xcopy "c:\Users\User\Desktop\*.*" "F:\Sicherung\User\Desktop\" /e /r /d /h /y /i /c

...
macht nur differential, geht rasend schnell