Thanx Putta, I'm sorry, I didn't know ho to do that ;)

@eddie11c : Thanx, I'll try that. But last time I tried to add kext with hdiutils, he mounted the disk with _nobody:_nobody, and I wasn't able to change to root:root, and so, I cannot run the kextcache..

Any idea ?

Thank you !

iero.

if you follow the instructions you should be able to read/write to the disk
if you get an error about the kextcache being stale, change the name to something else then rename it after.