GA-Z68X-UD3H-B3 hangs at Dual UEFI bios screen

[miezurecords]

Guys some help please!

My config never had any trouble and worked fine until i went on and installed uefi bios (so I could use the full power of my i7 under Mountain Lion). Now, I get this weird behavior:

If I leave the PC off over night, when I turn it on in the morning I either get a freeze on the greet screen with UEFI Dual Bios, bla bla or it tells me it can't read any OS from the HDD... when I check the execution order in the Bios, i see that it chose as boot drive one of my data drives even if I picked the order as stated above. I redo the order and it all goes smoothly. I save and it's all good (although sometimes it hangs randomly on the UEFI Dual Bios greet screen...).

My initial setup

SATA3 0: Boot SSD for MacOS (Kingston V200 128GB) - legit patched with tonymacosx86 Multibeast
SATA3 1: Boot SSD for Windows (Kingston V200 128GB)
GSATA3 0: Data HDD for MacOS (1TB Seagate 7200rpm / 32mb buffer)
GSATA3 1: Data HDD for Windows (2TB Seagate 7200rpm / 32mb buffer)

So far, the only working solution I could find was swapping the ports on the motherboard and having this config:

GSATA3 0: Boot SSD for MacOS (Kingston V200 128GB)
GSATA3 1: Boot SSD for Windows (Kingston V200 128GB)
SATA3 0: Data HDD for MacOS (1TB Seagate 7200rpm / 32mb buffer)
SATA3 1: Data HDD for Windows (2TB Seagate 7200rpm / 32mb buffer)

This is just a workaround, though, and I still get hangs at the Dual Bios Boot screen... But at least, once I press the power button again, it starts smoothly with the right drive (it's as if on this UEFI config, the GSATAs were configured to be default boot)

Do you have any clue? Should I reflash my bios, or any suggestions to make sure I can set a permanent boot order and not get that nasty hang at boot screen?

Thanks a lot!

My Hackintosh Build:
Intel Core i7-2600k|Gigabyte GA-Z68X-UD3H-B3|16GB DDR3 Corsair Vengeance|Gigabyte AMD Radeon HD 6870|2 x Kingston SSD V200 128GB|Seagate 1TB/7200rpm|Seagate 2TB/7200rpm|deLock Firewire TI Chip PCI interface|Corsair CX600 PSU|Asus DVD-RW|Apogee Duet FW audio interface| Running Mountain Lion 10.8.2 and Windows 7 64 bit on separate drives

[MarkJohnson]

A simple work around is to disable all drives in the BBS boot order except the ML and then use the F12 when you want to boot from another drive.

It sounds like it could be ML messing up your BIOS.  I've had this happen in the past with a different issue.

Maybe try tonymacx86 forums for more help.  Try searching the ML section for your exact motherboard and see what others have done or ask their advice.

-=Mark=-