sorry for the confusion and i admit i made a mistake but i remember i saw it somewhere here Edit : I have found the two solution : 1. Plug the in the pc on mass storage mode and unplug it OR 2. Terminal way : tracker-control -r to force a full rebuilt when you lunch gallery or music player Edit 2 : Please remember that using "tracker-control -r" will also delete all contacts, all feeds, all chat messages and all sms from your phone.