I purchased this board not knowing if I was able to get it up and running but after much tinkering and help from Tempted, it's all working. Everything.

Steps I used to get this board fully operational.

Set up your BIOS

1. Install Windows and flashed the board to 1.90 from ASRock's site: here
2. This may cause a CMOS error on startup, just load default settings.
3. Boot into windows again and flash with orignalmacnut's modified BIOS (1.80) from his site: here
4. Use WinFlash that can be found here to flash the modified BIOS
5. Again with the CMOS, just load default settings
6. Reboot into your BIOS. Go into your IDE Configuration. Under SATAII Configuration set it to "Enhanced" and Configure SATAII as [AHCI]
7. If you have more than 4 gigs of RAM, go into Chipset Configuration and make sure "Memory Remap Feature" is set to "Enabled", it's the first thing in the menu

Install OS X

1. Boot up with iDeneb 10.5.5 (what I used) and select any kernel you want to use and your video drivers (I used NVinject 512 for my 9800GT)

After Installation

1. You should be up and running with everything except sound. To install sound use the sound kexts in my download.
2. If you have External Hard drive icons, OS X thinks that you really are using external drives, this is due to AHCI. Install the IOAHCI kext in my download.
3. If you get any sort of CarbonLib error while trying to launch an application, apply the fix in my download.
4. You can apply all the kexts using OSx86 Tool or do so manually.

Click to view attachment
You should be all set now.

I've Updated this Bios to v2.0 for 10.5.6, currently working perfect on my system.

I bought the P43Twin1600 motherboard just because of this tutorial and it did not let me down.

MANY THANKS!

1080P playback with no issues whatsoever.

C2D 2.8 E7400
8500GT 512mb
4gb DDR2 1066

Box cost w/o hard drive : $430

ABSOLUTELY PERFECT. Again, thank you!

http://db.xbench.com/merge.xhtml?doc1=345005

Can I install retail? Is there a guide for vanilla kernal? - I tried vanilla but it reboots before it gets past the press any key screen.

Thanks in advance.

Are you saying you didn't need to use Originalmacnut's modified bios?

I'm going to get this board soon I think.

Any update here. Has anyone patched the 2.0 bios yet? Will someone if not?

Original MacNut said he/she did above with no problems.

I patched the bios with the 2.0 version. Update the to the Official 2.0 before you patch. I installed with iDeneb 10.5.6. Works fine - having issues (panics) with vmware and quicksilver though. My ati card blinks a warning message when it comes out of sleep too - annoying.

The Plus: Boots in 10 seconds - fastest I have seen this machine do. Everything including sound works.

The minus: kernal panics - not sure but this is probably something I did. Sleep issue with ati 1950 pro card.

I couldn't get the Retail version to boot but if anyone has please let us know how. Thanks!

I turned off Memory remap and haven't had any kernal panics since. Make sure it is off. The os sees all 6gbs on my system - the bios doesn't but osx does.

I did the retail install method, because I bought a retail copy of leopard, and whenever I try to boot into os x, my pc just resets over and over again. Any help?

Edit: I was able to successfully boot using the 9.40 modbin kernel. However I still want to run vanilla. What might be causing the problem.

I am running vanilla kernel with the retail install guide outlined here http://www.insanelymac.com/forum/index.php?showtopic=86167

Edit: Also, I downloaded the archive listed above and replaced my IOAHCIFamily.kext with the one provided and I still can't get my sata to work at all.

Edit 2: Forgot to change SATA to AHCI from IDE mode. So, that works now.


Second try at retail install method outlined here: http://www.insanelymac.com/forum/index.php?showtopic=86167 was successful and using the default settings of the v4.4 post_patch.sh file as well as the kexts from the archive above I had a completely working system with Network, Audio ( Internal Speakers, Headphones, Line Out, Digital Out, Internal Microphone, Line In, Digital In ), AHCI and full QE/CI Dual DVI with ATI HD2600xt.

Had some instability with keyboard mouse, then I noticed the board had the jumper for ps2/usb voltage set to +5vsb, set to +5v and no problems since. Also, had to enable No execute memory protect in the bios to even boot os x. Also, ethernet seems to require me to disconnect and reconnect the cable every once in a while or it will get an internal private address or think it is disconnected. Also, in System Profiler my memory shows as 0 MHZ instead of 1066 MHZ.

Anyone else having these issues, know fixes?

Thanks

For some reason, some installers think my system is a Power PC system. Specifically, the Silverlight 2.0 installer wont install b/c it reports my system as Power PC. Can anyone else try this installer and see if it works for you?

Thanks so much for this easy guide.

Got my system up and running today, 10.5.6 with bios version 2.0

I used the Voodoo 9.5 kernel and I've been getting kernel panics.

Right now I'm reinstalling OSX with the 9.2.2 kernel to see if that addresses my issues.

What kernel did those of you that have it up and running smoothly use?



edit: I discovered I was getting kernel panic every time I tried to download and mount the safari 4 installer. I'm going to not do that and see if I get it otherwise.

edit2: Now i realize, after trying 3 of the 4 available kernels on iDeneb 10.5.6 that I get kernel panic every time I try to mount a .dmg file. Ugh... any suggestions?

edit3: Hopefully final edit, I fixed the fail to mount .dmg problem by installing the seatbelt.kext from 10.5.5. I think I'm up and running for good now.

Still need some help here. I am unable to get shutdown or sleep to work and need a solution please.

I used the retail install method mentioned in my post above. I am running 10.5.6 with vanilla kernel, IONetworkingFamily uuid fix, AppleSMBIOS_27, tried AppleSMBIOS_28 as well, no difference.

When shutting down my system halts the cpu and drives, but the power light and system fans still run. When trying to sleep, the cpu and drives are halted, but the power light blinks repeatedly and the fans stay on.

Also, I have a 2.5Ghz Core 2 Quad Q8300, but About this mac/System Profiler reports it as a "2.5Ghz Unknown" and some installers report my architecture as PowerPC. I assume the 2 are related.

Is anyone able to get shutdown and/or sleep to work with vanilla kernel?

No one gonna help?

that's all?

my disk is iPC 10.5.6
no select kexte for Sata ICH10 or Jmicro??

Has anyone updated to snowleopard with this board?

hi all. I'm new at this. I wonder if I upgrade the bios with asrock vercion 2.0 or the 2.0 OSXCORES? thanks and excuse my English.

hi
i bought this board
i update my nios version of 2.1 to 2 and from 2 to 1.8 and from 1.8 to apple
but now
i cant change my bios setting
when i change them ...and reset...the setting..back defult....and icant run software for flash again my bios ...when i run them....i see the dont sen errore!
===============================
second problem is:when i instald universal 10.5.6 on this board...
when i want to boot>>>>>>>>>>>>>>system reset!!!!!!always this happend
what can i do ?
tanx & sorry for my bad in english