AFter iATKOS install, OS X briefly shows gray logo screen then reboots

[gritmaster]

I installed the iATKOS leopard release onto a multi-partitoned harddrive as follows:

 

Partition 1: Win XP, NTFS

Partition 2: OS X Tiger 10.4.7, HFS

 

This setup worked great. I wanted to keep both WinXP and 10.4.7 while I tried out 10.4.5, so using Acronis Disk Director, I added a new HFS partition at the end of the drive, so my new partition scheme looks like this:

 

Partition 1: Win XP, NTFS

Partition 2: OS X Tiger 10.4.7, HFS

Partition 3: Leopard/iATKOS, HFS

 

I used Acronis Disk Director to set the partition type of my Partition 3 to 0xAF type and then erased the drive during the install process of iATKOS using DIsk Utility.

 

The install went great - I installed EFI.

 

However, when using the Boot Manager from 10.4.7 on partition 2 (partition 2 is set Active), and I hit F8 to bring up the Operating System Selection screen, and select Leopard, I briefly see the gray Apple Logo screen then the system reboots. 10.4.7 and WinXP still boot fine when they are selected.

 

Booting with -V doesn't help b/c the reboot happens so quickyl I can't make out what the first few lines of text are.

 

The system is an Acer Aspire 3680 laptop with CeleronM and GMA950 - works great in 10.4.

 

Does my issue have something to do with the partitioning scheme or EFI?

[stealth]

iATKOS only works with intel core-based processors, no?

[hugorus]

No EFI!