marshall

thanks jake I had remove AppleACPIPlatform but, sound still not work and shutdown still be problem.. yes I have dsdt and I had patch dsdt until no error found.. ok I try use your dsdt ======= I had try your dsdt, still not work for shutdown and sound

here is my kext (I use kext from Mavericks earlier) : I don't patch appleHda kext right now, I'm still learn how to patch it.. my problem only shutdown and sound.. thanks..

sorry for long replay jake.. right now yosemite install on M400 is succes, only sound and shutdown are not work..

I try to install yosemite (10.10.1) using your guide, ater boot, I got blank screen like this :

thanks for response Jake Lo.. my laptop spec : Dell Precision M4400 Intel Core 2 Duo T9600 Nvidia Quadro FX 770M 1920x1200 display 4Gb DDR2 RAM now I'm using mavericks, I create insteller using myHack

Hi, can anyone explain me how to install yosemite on precision m4400? which methode must I use?

using this DW5520 guide, I wanna install Dell Wireless 5550 (Ericsson F5521GW) on mavericks system, but in my WWAN.ccl, I can't find for ericsson devices.. does anyone have same problem? thanks