Slow access to hard drive when installing SL

[Glud]

Hey guys!

Thank you all for this great community!
This week i decided to give iBoot a try, and after a lot of reading, tweaking and trying i succesfully made my PC boot the Mac OS-X disc. But when I open the Disk Utility everything starts to "hang" for a couple of minutes. It's like the connection to the hard drive is bad. After selecting the hard drive on the list in Disk Utility the system hangs for like 4 og 5 minutes and when it's finally done and I am able to format the drive, it hangs for like forever after starting the format-process. The OS-X live-CD system "itself" seems ok - i can change keyboard layout and browse other drop-down menues The only way back is to force the Disk Utility to quit (CMD+Q). Back at the main screen it then hangs again when trying to detect available hard drives.

What could possibly be messing this up?

I am using the latest iBoot 2.6 and I am typing -x PCIRootUID=1 upon booting since my GFX is a GTX 470.

My setup
ASUS P6T motherboard
Intel Core i7 920
6 GB OZC DDRIII RAM (only 4GB installed)
ASUS (Nvidia) GTX 470
Western Digital 320 GB SATAII hard drive
Antec High Current Gamer 750W PSU

Setup details
Runnig latest bios (1408 i think)
JMicron controller is DISABLED
Onboard audio controller is DISABLED
Intel controller is set to ACHI
Hard drive is connected to SATA-port #2
Optical DVD-drive is connected på SATA-port #1
Intel SpeedStep is DISABLED
C-State is ENABLED and limited to C6
All extra USB-stuff and hard drives are DISCONNECTED
Everything is running stock clocks

Once again, thank you for a great community
And sorry for my bad english

Cheers!

EDIT: Typo

 

[Glud]

Okay, after ALOT of research I finally fixed it.

The slow access was due to some IRQ conflict between SATA and HPET - IRQ2 need to be free for HPET to use. This is trick is done through modding the DSDT.

Lucky for me, some guys already did the coding, and "all" I had to do was to make iBoot load the modded DSDT file before installing (wasn't that easy)
Wollah!

More information about the slow SATA issue on some ASUS boards (including my P6T) can be found here:
http://www.projectosx.com/forum/index.php?showtopic=564

A IRQ-modded DSDT-file for the P6T-board can be found here:
http://trick77.com/2009/10/12/asus-p6t-64-bit-osx86/

Another DSDT-file for the P6T which should make you system preform a little better can be found over at "The Flee's OSX86 Page":
http://www.fleebailey33.org/
This guy did a really good job on tuning his DSDT so I can only recommend it (if you have a P6T of course). Just find the post with his latest package (think it's 2.0.9.5).

Cheers!

 

[theslalom1]

My setup is almost identical to yours and I was wondering if/how you were able to get your graphics card supported.