Mountain Lion to Fatal1ty Z77 Professional and Sapphire HD7870 2GDDR5

Hi, sorry for my english, i'm new in this forum, i'm read more posts for this question and one user seems that put the mountain lion on this mainbord.

my configuration is:

Asrock Fatal1ty Z77 Professional
INTEL I7 3770k
4x4 DDR3 Geil Corsa 2133
Sapphire HD7870 2GDDR5

For Wifi Netgear WNA1000M (This work under MAC OSX with another driver)

This in't my firt MAC on normal hardware, i make more of five installation, so i know that my graphics card isn't currently compatible and i would like underst if possible make it.

Today, i'm downloading MOUNTAIN LION of APPLE STORE, from this i like understand which follow tutorials for making a ML 10.8 USB BOOT.
I've burned cd of iBoot and from this point I cannot bring up the screen ML, i'm make USB under DISK UTILITY OF MAC and USB don't start

Can you help me understand why not start it?

You should use UniBeast+MultiBeast method. You can find the guide here.

yeaaaaah fist step.... USB UNIBEAST created...
next step, i'm find my hardware component

2 x wired network: Broadcom NetLink BCM57781
Graphic Card: Sapphire HD7870
// : Intel 4000
USB 3.0: Etron
Audio: Realtek
Wifi: Netgear WNA1000M

I have to go by trial and error, write on my progrss

ipod993 said:

yeaaaaah fist step.... USB UNIBEAST created...
next step, i'm find my hardware component

2 x wired network: Broadcom NetLink BCM57781
Graphic Card: Sapphire HD7870
// : Intel 4000
USB 3.0: Etron
Audio: Realtek
Wifi: Netgear WNA1000M

I have to go by trial and error, write on my progrss

Click to expand...

Next steps, before even attempting to install is first, go to http://biosrepo.wordpress.com/asrock/z77/ and download the BIOS for your board and flash it so you can get native OS X power management without KP, then second, remove the HD7870 and install on iGPU HD4000. At this time there is no support for the HD7870 gfx card in OS X. Rumor has it there is some support for HD7xxx in 10.8.3.

Hi guys, in this moment i'm writing from my Mountain Lion on Fatal1ty Z77 Professional, my bios vercion is 1.30 and i'm afraid flash it with new bios in this desktop i've windows 7 and i can't clean the hard drive because i working with him...

Whit new bios, Can i run windows 7 and Mac ???
what is the difference between the two bios?

Another question, for run my new mac, i've to start before windows 7, reboot it with Unibest connected, select unibeast as boot and select my new Mountain Lion for start it, if i don't follow these step to step, my mac don't run

The new bios probably solved this problem ?

i will try soon install new driver with Multibeast, i see there are more drivers with DSDT and whitout DSDT, what is the different ?

1st image is boot screen of MAC if to the first run i select Hard Drive with MAC...
2st image desktop's component and assembly

See if ManMan's Boot0 guide: boot0 Error: The Official Thread

You know that Apple does not support AMD/ATI 6900 and 7000 series graphics cards at all, yet.

Good morning, this solution don't work for my case
I copied file boot1h from Unibeast to HD with istruction DD IF=..... OF=.... , well my screen not solved.
I have a doubt, heve i put this file in ML partition or Bios Partition "EFI for Camaleon"?

Wired work this driver : http://www.osx86.net/view/3089-broad..._bcm57781.html