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I can install fine using iDeneb 10.5.7 (latest version) with all of the drivers that apply to my build. But run into a problem once it's installed. Here are the details of my rig

 

Intel Pentium Dual Core e6300

Asus P5KPL-AM

Gigabyte ATI radeon 4870

 

Basically, when I install, it finishes fine and I try to boot. I use the -v command to check all the info while booting and it all seems to go fine and boot, for a split second it displays the black cursor on a blue background before it shuts off the monitor and stays on. I've tried to boot with a graphics mode modifier, and still no luck.

 

Does anyone have any Ideas?

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try boot with -x (safe mode), no graphics but gets you into the installl, then look at 4870 threads and figure out drivers for that card

 

I've tried the -x command, still no luck. I'm using a TV as a monitor, do you think that could be the problem?

Do what I do...

 

Start with -s -v

 

/sbin/mount -uw /

rm -rf /System/Library/Extensions/Caches/*

rm -rf /System/Library/Extensions.*

rm (ALL ATI, GEFORCE & NVIDIA driver kexts!!)

 

This should get you a working 800x600 desktop - if you can connect a regular monitor, you may even switch to 640x480 (not recommended) - this should get the next restart working on your TV - then it is a matter of reinstalling a known working driver package (and injector) for your graphics card. I use NVidia GeForce 9800GT, and this system works for me. I need to install ONLY my device/vendor IDs in NVDANV50.kext, NVDAResman.kext and GeForce.kext. Then I need to add a custom device-properties hex line in com.apple.Boot.plist.

 

You may need to do something similar yourself (but for ATI). PS. using a TV as a monitor sucks, unless it is as full-HD LED LCD :-)

Unfortunately I can't seem to get snow leopard working either as I need the EFI string for my graphics card :( and as I can't get the EFI string without booting into a functional desktop, i'm buggered. My motherboard should support snow leopard, I bought my rig to be specifically supported and I can't seem to get it working. I even bought a 4870 instead of a 4890 because I heard they had better support.

You should be able to boot to a functional desktop by MOVING all functional ATI and NVIDIA drivers to a separate folder on the desktop (/Users/yourusername/Desktop), and booting in VESA mode - you may have to type Graphics Mode=1024x768x32 at startup tho (some widescreen resolutions are supported by VESA mode, but some are not (my 9800GT does not do 1920x1080 in VESA).

 

Once you are at a functional desktop, you can use OSX86Tools (or UInstaller) to get your EFI string, copy and paste it as the last command before </dict> in your com.apple.Boot.plist - eg.

 

<key>device-properties</key>

<string>your very long hex string from osx86tools</string>

 

My Boot.plist has <string> (new line) hex string (newline) </string>, so it is on 3 separate lines! don't know if that is important.

 

Good Luck

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