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Can I update Gigabyte Bios to UEFI with @Bios without making changes

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Feb 3, 2012
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Motherboard
Gigabyte Z68X-UD3H-B3
CPU
Intel Core i7 2600K
Graphics
MSI HD Radeon 6850 OC version
Mac
  1. 0
Classic Mac
  1. 0
Mobile Phone
  1. Android
Sorry, I'm a little confused about the whole Bios to UEFI thing.

Currently I have a Gigabyte Z68X-UD3H-B3 with Bios F12 on it.
Now I want to upgrade to Yosemite and thought I'll upgrade the Bios to UEFI as well.

But I'm terrified that doing that will mess up my system (again) and/or make my graphics card unusable.
I had to use a custom DSDT file to make the HDMI port work.

Can I simply upgrade to UEFI using the @Bios software WITHOUT needing to change anything on my current system?
If not, what steps must I follow?

Thanks for the help guys!
 
UPDATE:

Oke so I managed to update to UEFI without any problems.

What I did:
- Removed the DSDT file in the /Extra folder
- Created a bootable USB in Windows and placed the UEFI bios for my motherboard on the drive
- Reboot and install (press F12 and select the bootable USB)
- Changes some settings in the new bios to the recommended settings:
http://www.tonymacx86.com/bios-uefi/130920-recommended-bios-uefi-settings-beginners.html

Next stop...
Yosemite


UPDATE 2:
Success! Updated to Yosemite
Used this guide:
http://www.tonymacx86.com/yosemite-...-os-x-yosemite-using-unibeast-multibeast.html

- If you are stuck the No Mach_kernel message, then make sure you are booting from the Unibeast USB (by pressing F12 at startup and selecting the USB) instead of the normal Chimera bootscreen.
 
I have almost the same set-up as you.
Can you explain me how you install the graphic card (bios set-up, kexts, other changes..) on Yosemite.
Everything else is working. My screen is now running from the motherboard.
 
Hi,

To be honest, I'm not completely sure why it worked without making changes.

I'm not using a DSDT.aml file and made no changes to the org.chameleon.Boot.plist file either.

This is what it looks like by the way:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>EthernetBuiltIn</key>
<string>Yes</string>
<key>GraphicsEnabler</key>
<string>No</string>
<key>IGPEnabler</key>
<string>Yes</string>
<key>Kernel Flags</key>
<string>kext-dev-mode=1</string>
<key>Legacy Logo</key>
<string>Yes</string>
<key>Timeout</key>
<string>2</string>
<key>HDEFLayoutID</key>
<string>01000000</string>
<key>UseKernelCache</key>
<string>Yes</string>
<key>HDAEnabler</key>
<string>Yes</string>
<key>Graphics Mode</key>
<string>"1920x1080x32"</string>
</dict>
</plist>

The only thing I can think of is that it worked because of the UEFI bios.
Sorry I can't help you any further.

PS: you might want to check out my other threads where I had the same graphic card problems as you.
 
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