Ok thanks I've succeeded !! but I can't find the blue Retropie screen
at the boot of the rpi !! I would just replace the image by my own image or disable it.
I check the Retopie wiki but I can't localize the image, do you know where it is ?!
In the "/home/pi/RetroPie/splashscreens" there is nothing..
I looking for this image for replace it :