can anybody explain me the instructions of "Stuck "Waiting for root device"" to me more specifically?

Find a known working kext for your specific chipset.(Google is your friend)-----ok, i've got one that worked for me on 10.5.1

hdiutil attach /"Leopard.iso" -readwrite----------do i have to rename the iso to "Leopard.iso"? where should i put it? should it be mounted?

Create a folder named Extensions on your Desktop
Unpack Extensions.mkext from the Leopard.ISO in this folder------is the following command intended to do so?

mkextunpack -v -d /Users/"YOU"/Desktop/Extensions /Volumes/"Leopard.ISO"/System/Library/Extensions.mkext


Remove the MeDevil's kext(AppleNforceATA.kext)
Replace with the one known to work for your chipset
Fix the permissions on your new file-----------again, how can i do that? type the following command in terminal?

type

kextcache -a i386 -K /Volumes/"Leopard.ISO"/mach_kernel -m /Users/"YOU"/Desktop/Extensions.mkext /Users/"YOU"/Desktop/Extensions


and place the newly created Extensions.mkext into the ISO and burn it to DVD and try again.


if anyone can help me on this? thank you? thank you~

one key point is that i don't really know how to modify the iso...

1 - hdiutil attach "path-to-your-ISO" -readwrite

This command will mount your ISO.

2 - Create a folder named Extensions on your Desktop

mkdir /Users/"YOU"/Desktop/Extensions

3 - mkextunpack -v -d /Users/"YOU"/Desktop/Extensions /Volumes/"Mounted-ISO"/System/Library/Extensions.mkext

4 - Remove the MeDevil's kext(AppleNforceATA.kext)

5 - Replace with the one known to work for your chipset

6 - Fix the permissions on your new file

chown -R root:wheel /Users/"YOU"/Desktop/Extensions/"YOUR KEXT"
chmod -R 755 /Users/"YOU"/Desktop/Extensions/"YOUR KEXT"

7 - kextcache -a i386 -K /Volumes/"MOUNTED-ISO"/mach_kernel -m /Users/""MOUNTED-ISO"/Desktop/Extensions.mkext /Users/"YOU"/Desktop/Extensions

8 - Place the newly created Extensions.mkext into the ISO and burn it to DVD and try again.

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Mac OS X 10.6.3 • 2.8 GHz Intel Core I7 860 • ASUS P7P55D • 2 GB 2 Ghz DDR3 • ATI RADEON XFX 4890 1GB • 2 x Hitachi 160 GB Serial-ATA • PIONEER DVD-RW DVR-112 • LaCie Desktop Harddrive 750 GB USB

thanks zephyroth!

however, i've not got through yet.

when i was in step 6,

chown -R root:wheel /Users/admin/Desktop/Extensions/applenforceata.kext

it says that operation not permitted, can i use sudo -s and then execute the fixing the permissions' command?

and the other thing is that where do i put the new Extensions.mkext? just under the root of the lerpard dvd (together with install mac osx and mach_kernel)?

thanks again!

Yes sudo -s first, then chown/chmod.
It goes inside /system/library on the DVD. You should see the old one there already.