6gb Ram won't boot but 4gb will

I recently got a Hackintosh, it all worked perfectly. I wanted to up the ram from 2gb to 6gb and this is where I ran into problems. I've got it running with 4gb and no problems, so what is this extra 2gb doing to cause such a problem?

Anyway, the hardware I'm using is this:

CPU: Intel Pentium D 940 processor (3.2 GHz)
Motherboard: Asus P5ND2-SLI
Memory: 2GB DDR2 PC2-4200 DIMMS (2x1gb - 4 memory slots. Max 8GB)
Hard Drive: 500GB SATA
CD Drive: Multi-Format Dual Layer DVD Re-Writer DVD-ROM
Video Card: nVIDIA GeForce 6600 (256MB) PCI-Express


And here's a photo I took of the screen every time I try to boot with 6gb in:

http://i25.photobucket.com/albums/c7...n/IMG_7814.jpg


After that line, it just turns off.


Any contribution is greatly appreciated and hopefully I'll be able to repay it someday.

Also, I forgot to add, I can also boot into Windows 7, which works totally fine with the 6gb, it's only when I try to go to osx that I get the issue.

This is what i have heard:
To install mac osx, you can have a maximum of 4 gb's. I have heard that if you have extra ram, you can insert it after the installation process when mac osx boots up.
I suggest you put in 2 gb's of ram first, then add more. I hope this answers your question.

Hey Akhil,

Thanks for that, I tried installing with 4gb in, and I just got a big error, with words all over the screen. I tried again with just 2gb and it worked. I then put in 6gb once it had all booted properly and then turned off. I'm still getting the same errors with the 6gb in, but still works fine with 4gb. Are you saying I can't get more than 4gb in osx at all?