i tried "-v -s -f cpus=1" and i get a console

i typed exit (because it says type exit to boot normaly) but it freeze too

i made an other picture (poor quality sorry) http://www.tout57.fr/leo/test.jpg

we can see now it find my hardrive (get boot device ... BSD root)
then start jnl HFS and after about 40 second it freeze (i know it because i clicked on the CAPS lock and after 40 seconds the led don't change )

any idea ?