netkas.org forum
July 24, 2019, 02:17:15 AM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News: Information for registering users http://forum.netkas.org/index.php/topic,2246.0.html
 
   Home   Help Search Login Register  
netkas.org forum > General Category > Archieve > PC EFI > Why is Apple's EFI graphics incompatible with Windows in UEFI?
Pages: [1]
« previous next »
  Print  
Author Topic: Why is Apple's EFI graphics incompatible with Windows in UEFI?  (Read 7823 times)
jhohisel
Newbie

Offline Offline

Posts: 3
« on: December 24, 2014, 07:39:03 PM »
After fighting with Windows trying to get UEFI on my MacPro5,1, I am giving up and going back to BIOS. It installed fine, but as soon as the graphics driver is loaded I get no image? I have graphics until the login window, then I get a black screen (this is with both my Apple 8800GT and my Apple GT 120). If I try a non-flashed card (EVGA GT 520) I have no graphics until I get to the login screen. I noticed the official Sapphire 7950 for Mac has a switch on it that switches between CSM/Apple EFI and a UEFI compliant firmware. This must have something to do with it. Curios if anybody knows why this is.
Logged
netkas
Administrator
Hero Member
*****
Offline Offline

Posts: 835
« Reply #1 on: December 26, 2014, 04:28:35 PM »
are you sure it's just graphics getting missed and not complete system lockdown ?
Logged
Pages: [1]
  Print  
« previous next »
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!