osx86 fails to boot after upgrade to 4gb ram

[Goymer]

Hi there,

 

I've just upgraded from 2gb to 4gb ram, everything is fine in the bios etc and will boot into Vista no problem.

However when I try to boot into my Leopard installation it gets to the white screen with the apple logo in the middle and then stops and does nothing.

 

I tried using the -v command to boot and basically it just starts MAC framework and then stops.

 

Anyone had this problem before or know what could be causing it?

 

Thanks

[Goymer]

Probably not but... in "About This Mac" it identifies my system as an iMac which I assume would only have 2 dimm slots on the board. It wouldn't be an issue with using more than 2 dimm slots causing this would it?

 

On a side note is there anyway to change what machine the Mac is identified as or to change it saying the memory is running at 800mhz instead of 667mhz?

[Goymer]

This is what it hangs on:

 

MAC Framework successfully initialized

using 16384 buffer headers and 4096 cluster IO buffer headers

IOAPIC: Version 0x20 Vectors 64:87

 

[Goymer]

Ok well after hours of searching I managed to fix it.

 

Not sure which thing did it yet but I used the "himemory_mode-0" command at the bootloader which enables more memory to be used apparently.

 

I also installed a different AHCI kext and removed AppleIntelCPUPowerManagement.kext at the same time but don't know if they made any difference.

[Goymer]

Back to the drawing board...

 

After a reboot it won't work again so I have no idea why it did before :/

 

Doesn't anyone know?

[pinebanana]

Hello Goymer!

 

I'm sorry to reply without clear solution about this problem.

 

Actually, I'm stuched this same problem for a long time and searching a solution.

 

If you agree with me, it is far better that you and i compare our H/Ws or S/Ws to get the problem solved.

 

Below is my H/W specs.(LAPTOP)

 

CPU : Intel T8300

RAM : DDR2 PC3200 2G*2 = 4G

M/B : PM965+ICH8(82801H)

Video : Geforce 8400M 128MB

Sound : Realtek (onBoard)

HDD : WD 500GB, WD5000BEVT

 

My tries.

 

1. Kalyway 10.5.2 -> well installed and run

 

2. boot-132 + retail 10.5.6 -> IOAPIC : failed, Version 0x20 vectors 64:87

 

3. Boot with external HDD(OS: Kalyway 10.5.2), then install retail 10.5.6 to the internal HDD after installation, I also installed chamelon 2.0 RC2 640 : failed, Version 0x20 vectors 64:87

 

4. same process with #3 but i used boottink: failed, Version 0x20 vectors 64:87

 

Question.

 

Have you tried to pull out you RAM Module and use it just 2 giga bytes? your original problem is that you can't boot after you installed another ram module.

 

Reply me pls~~ thanks.

[Goymer]

Hello Pinebanana, thanks for replying.

 

My H/W specs are:

 

CPU : Intel E6750

RAM : DDR2 PC6400 1G*4 = 4G (2 x Geil, 2 x Corsair)

M/B : Asus P5Kc (P35) J micron & ICH9

Video : Geforce 8800GT 512MB

Sound : Realtek HD (onBoard)

HDD : Hitachi 7K1000.B 1TB, Samsung F1 750GB

 

Installed with iAtkos 7, all fine until I add the extra 2GB ram, even fails if I add 1GB to make the total 3GB.

 

It boots perfect if I just use any ram to make 2GB total.

 

I managed to fix this issue by finding this thread and installing the modified JMicronATA: v0.6 and AppleATIATA: v0.1 kexts.

 

This seemed to work at first but then randomly after a reboot or shutdown it would fail to boot again, I think this had something to do with after I used my windows partition it would fail to boot again.

 

Then I backed up my system and installed the oem 10.5.8 update via apple update, rebooted and now the system works fine with 4GB!

 

I have yet to go back into my Windows partition just incase it goes wrong again :/

 

Hope that helps, let me know.

[pinebanana]

Hello, Goymer!

 

first i'm so sorry about late reply your fine instructions. and Thank YOU!

 

I'm going to fix the problem with your solution, and I promise you to tell about the consequence.

 

Thank you again and wish me luck!