Hi Tricky,
Thanks very much. This board actually has 8 Sata 3 connections, the first 6 are controlled by the AMD SB850 and the last 2 by the Marvel chip. The manual recommends using SATA 1-6 for booting. There is a setting in the bios for booting from the marvel controller, but even though I have the marvel drivers installed, I am unable to boot from there in either mode, IDE or AHCI. Perhaps because I didn't install the operating system while connected to the Marvel controller?
I'm going to give re-install all these drivers and try to reboot to AHCI. I'm not optimistic however. This is an interesting issue, and hopefully I can learn something from it. I am going to install XP on another drive or partition in AHCI mode while continuing searching for a solution for this install. As I believe I mentioned before there are solutions that others have posted and have had success fixing this problem, but (as I recall) they have all been for Intel based mother boards not AMD. Bottom line Win XP is arguably obsolete and not fully compatible with some newer hardware. But we have gotten a lot of millage out of it! So compare that with our digital cameras which are obsolete in one to two years! In that regard XP is looking pretty good! :-)
Regards,
Kelly