Hi Nagu,

Currently, no, my primary OS is OS X, not Vista. When I originally posted, my HDDs were the other way round, so Vista was the main boot and I have tried the method you're posting, many times. Even before going off and searching for help! The Vista boot menu part, the whole BCD bit works perfectly without errors, so there's no point telling you what it says after each step. It works! The bit that doesn't work is when chain0 tries to pick up the boot process, it fails to find the OS X drive and just sits there with "Chain boot error".

Ok, so that was then. Things have been swapped around here a little since my Mrs is not familiar with Vista so I made OS X the default disk.

2 HDDs, both SATA in AHCI mode
Disk 0: GPT Partition scheme
OS X on rdisk0s2

Disk 1: MBR Partition scheme
Vista on rdisk1s1

OS X Boots to Darwin prompt, the only option available is rdisk{0,2} (OSX).

I'm kind of stumped as to how come this is proving so difficult, but it certainly is!!

Martin.