that's didn't work..
M11xR2 installed already by Retail SL 10.6.3
Run into Mac os with iboot legacy
multishit 3.8 with user dsdt + system build -> reboot
can't boot to SL (just apple screen logo's)
just info my M11x r2 have Nvidia GeForce GT 335M Discrete Graphics (1GB GDDR3) with switchable Intel GMA 4500MHD integrated graphics
and no have discrete graphics switch on/off at BIOS..maybe that's cause a problem..
http://linux-hybrid-graphics.blogspot.com/2010/10/howto-allienware-m11x-r2-nvidia-optimus.html
Thanks for your help..