ok so now, black screen when booting my 10.8 installation disk, i may need a patch Carpi too in /E/E of my USB. Let s try the 10.9 one.
Ok finally I followed the same steps, and here it works (not my touch pad, but that a different story).
I'll give 10.8 a try (set sound, bcm wifi , ...) , I'll try later 10.9 again (on another hard drive, dont want to destroy a working install).
If someone find any suggestion why 10.9 was not working, feel free ...