Yes, my sATA was set to AHCI and I typed it without the quotes.
I also tried with a "-x", but same thing.

When I add "-v" I can see that it hangs on a message that mainly says "Waiting for boot volume with UUID..." and then repeats a "still waiting for root device" error.

Weird should work, is the same mobo right?

Try with retail then, this is similar mobo
[GUIDE] Retail OS X Install (10.5.8) on Gigabyte GA-EX58-UD5 (Core i7) Mobo - InsanelyMac Forum

it's not the same mobo, but I tried so many configurations that I thought this one wouldn't hurt my mobo is asus p6t.

I'm buying some dual-layer dvds in a few hours and I'll try with retail.

Ah lol nah man you need another guide try this but btw someone got this one working just with 'busratio=20 -v'

Change this in your BIOS:
- Main
- Storage Configuration
+ Configure SATA as [AHCI]
- Advanced
- CPU coonfiguration
+ Intel � HT Technology [Disabled]
+ Active Processor Cores [1]
+ A20M [Disabled]
+ everything else [Enabled]
- Onboard Devices Configuration
+ High Definition Audio [Enabled]
+ Front Panel Audio [HD Audio]
- Power
+ Suspend Mode [Auto]
+ Repost Video on S3 Resume [Yes]
+ ACPI 2.0 Support [Enabled]
+ ACPI APIC Support [Enabled]
- APM Configuration
+ Restore on AC Power Loss [Last State]
- Boot
- Boot Device Priority
+ 1st Boot Device [ATAPI CD-ROM]
+ 2nd Boot Device [Hard Drive]

Heres a guide with retail <-- the best way to install
http://www.insanelymac.com/forum/ind...owtopic=144639

You can also try with iAtkos v7 tho ;D

Thanks for the suggestions, icchansan!

just a quick question before I try those changes... would I need to keep my motherboard changed, or can I change it back after the install (not only the HT & cores, that is)?
and which retail installation of leopard do I need? 10.5.0? 10.5.5? 10.5.6?

Thanks again.

Not really sure if you can change back after install, you need them back for windows tho.

For retail version you better try with 10.5.6 or up, but you can do with any version

Did you try to install iAtkos v7 with those changes using that boot flag?

cpus=1 busratio=20 -v

icchansan,
not yet. the only changes I've made to the BIOS so far were the IDE/AHCI.
I'm doing some 3D project at the moment so I can't try new installs now, but I'll try to install iAtkos v7 with the BIOS changes and those flags. Hope I'll actually get past the boot

By the way, installing applications on the osx86 works the same as on a native mac? And more specific, could I install the iPhone SDK 3.0 on it?

Thanks for all the help.

Edit:
in case you get a chance to see this before I install it. Do you have a suggestion regarding the customize selection for my board?

Yeah you can installing anything you want after that, and update them if is neccesary ;D

btw what kinda 3d you do? I barely know ppl with 3d skillz, I wanna have some support there too ;P

I'm finishing "interactive communications" studies, and part of that was 3DS Max. Modeling, Animation, Basic Rigging, Basic Particles, Basic Texturing and stuff like that.

What I'm doing right now is the final project and it's gonna be an interactive journey in the solar system while explaining stuff and tell of new discoveries in a way of self exploration (or something ) And it's gonna be in interactive 3D with graphics like (hopefully) the tv space series (like "The Universe").

here's some stuff I've done during the studies if you wanna see... they're not really finish, but it was a good exercise.
http://i30.tinypic.com/2cwqt6q.jpg
http://i27.tinypic.com/se8x1f.jpg

if you need any help, don't hesitate to ask

This is so off topic... ima PM you soon as possible ;D

Report back your results with Leopard, you need to check another thread for your issues, you dont have this mobo