Trying to install Sierra with Z68XP-UD3 and Sapphire Radeon HD 6870

[djribas]

Hey guys, I'm trying to install Sierra in this configuration and always after the apple logo on the monitor turns black and I get no signal. I have searched a lot on the internet and I have not seen anything that can give me a clue.
Unibeast with clover uefi use.

 

[djribas]

Sorry, this perhaps should go in Sierra desktop support.

 

[mutatio]

Try booting in verbose mode and report on (e.g., pic would be ideal) what you see in terms of the system locking up/kernel panicking.

 

[djb25]

I'm having the exact same problem. I can boot fine with USB, but not from the HDD. Monitor shuts off at boot. Also, the clover boot screen is HUGE and very weird looking. Like 8-bit graphics or something. GA-Z68A-D3H-B3 motherboard.

 

[ixus888]

I can say that Z68XP-UD3 is ok with Sierra though I'm not sure about the graphics card. Mine is Radeon HD 6850 and it works OOB.

 

[aage]

I have the same configuration as you have.

My motherboard is

Z68xp ud3. Bios Version is 8. ( not UEFI ) Legacy
Amd Radeon 6870
Intel I7 2600K

My system works fine and boots normally. First I got stuck at the boot process until I disabled USB 3 in BIOS.

Strange thing is that my friend has the the same system as I do except the Graphics card , he has Amd Radeon 6850. It boots fine with the USB drive, everything works normal BUT When booting from his Sierra install hard disk the clover boot screen is garbled ( like 8 bit graphics ) then when it finish starting up it only show like a 1/6th of the whole screen.

The most strange thing is that I took the graphics card from my computer and installed in his, but still the same , We compared everything btw mine and his computer, even the bios and every line in the config. plist. Now we are thinking of trying a new PSU in his computer just to see if it changes anything.

If that don't work then we are gonna make a Sierra installer on a SSD and just run it from there , should work the same as starting from the USB Drive , just much faster.

 

[aage]

Ys btw , I ran the updater to 10.12.1 and everything still works fine on my setup.