can I install "OSX86" on my mac pro , and use 9800GTX+

Discussion in 'Mac Pro' started by Amethyst, Oct 29, 2008.

  1. Amethyst macrumors 6502

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    Aug 8, 2006
    #1
    the same way as we install vista on our mac pro

    can i install osx86 (that come with bios kernel)

    and then using bios-based VGA card (such as HD4870, 9800 GTX+)

    on my mac pro in OSX86
     
  2. costabunny macrumors 68020

    costabunny

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    #2
    Interesting Question - not sure how this would fit in the ethical space :S But if you're not using the OSX licence seperately I think it would be ok (opens herself up for tomato throwing)....

    As for the BIOS kernel there I think you will have less luck. The dodgy kernels support the BIOS on the motherboard and as you don't got one of them, I dont think it would work (or very well if it did)
     
  3. dukebound85 macrumors P6

    dukebound85

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    #3
    the macpro does not have bios and osx86 doesnt provide bios. thats a feature of the motherboard
     
  4. richard.mac macrumors 603

    richard.mac

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    #4
    what about just installing the nvidia inject drivers? i dont know which one will work for the 9-series.
     
  5. Amethyst thread starter macrumors 6502

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    #5
    Why we can use bios-based graphic card on mac pro under windows vista ?
     
  6. Amethyst thread starter macrumors 6502

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    #6
  7. dukebound85 macrumors P6

    dukebound85

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    #7
    interesting, havent thought of it like that

    i am using a pc 8800gt in my hackintosh. what i did to get the drivers working was to go here

    http://nvinject.free.fr/

    maybe that would work?

    edit: why not just try the same steps as that guy did?
     
  8. richard.mac macrumors 603

    richard.mac

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    #8
  9. Amethyst thread starter macrumors 6502

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    #9
    Umh.. i have one problem that make me can't test this theory, that i haven't a molex cable to test my graphic card (GeForce 9800 GTX+ <= this one i can use perfectly on my hackintosh)
     
  10. richard.mac macrumors 603

    richard.mac

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  11. nanofrog macrumors G4

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    #11
    The boot manager loads before the actual firmware, and when windows is selected, it loads a BIOS Compatibility Support Module.

    aka BIOS Emulation. Easier to say. :p
     
  12. Amethyst thread starter macrumors 6502

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    #12
    HD2600 XT in my Mac Pro and 9800GTX+ on my PC

    if this theory work that make us a large number of choice for upgrading graphics card on mac pro

    9800GTX+, 9800GX2 that far exceed from Apple 8800GT in term of performance/price
     
  13. richard.mac macrumors 603

    richard.mac

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    #13
    you dont connect a Molex cable to your 9800gtx you connect a PCIe power cable which the Mac Pro has.
     
  14. Amethyst thread starter macrumors 6502

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    #14
    if mac pro have something like bios emulator, i'm think we can use bios-based VGA card , because OSX86 boot with bios (Darwin boot loader or PC-EFI that emulate EFI)

    can someone with mac pro and installed bios-based VGA card proof it

    mac pro 3rd party VGA theory

    EFI Firmware -> Vanilla OSX <== Normal boot os x
    Bios -> Darwin bootloader -> OSX86 <== OSX86 with Hacked Kernel
    Bios -> Darwin bootloader -> PC-EFI -> OSX86 <== with vanila Kernel
    EFI -> something like bios emulator -> Darwin bootloader -> OSX86 <== Happy using bios-based VGA
     
  15. sneezymarble macrumors 6502

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    #15
    That'd be a really nice thing if the OSX86 community produced a BIOS emulator so that you authentic Mac guys could have more freedom with respect to hardware upgrades.

    I'm not expert here but I wonder if there is a way to overwrite the EFI code on the motherboard and replace it with BIOS code from a similar Intel motherboard. Then, you could essentially treat a Mac like you would a Hack. You'd have to use a hacked OSX installation image or an EFI emulator. The plus side would be that you would have a lot more freedom with your platform.
     
  16. nanofrog macrumors G4

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    #16
    As it's the other way around, I'm not sure they would go for trying it. I wouldn't think many have access to Mac, compared to those with PC access.

    It would be nice though. ;)
    I do think this is possible using Intel firmware, but I'm not sure if many people would be willing to try it. :(
     
  17. sneezymarble macrumors 6502

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    #17
    Understandable. Who wants to risk killing an authentic Mac board. :p
     
  18. nanofrog macrumors G4

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    #18
    Exactly. :p
     
  19. JollyRogers macrumors regular

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    #19
    hmm. I have not thought of this. I don't have a spare sata drive or I would try it. Time to find a SATA drive. If it could be done I could run any video card and technically I would not be violating any eula cause it's apple hardware.

    I know EFI roms are the reason we can't use any pc graphics card... however I ran an OSX86 drive until the vista boot drive crashed and used the hacks drive for that. I was running a 8800gts in it and had no problems other then updates being a pita.
     
  20. projct macrumors newbie

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    #20
    I can confirm that this works with NVkush.

    From my blog post:

    1. Obtain a card that uses one or two 6pin PCI-Express connectors for power.
    2. Step 2: obtain two ATI mac PCI express power adapters ($30) or make your own for $10.
    3. Install this version of NVkush if you have a 512MB card. if it’s some other size, you may have luck by using diabolik’s NVkush plister. I only had to mess with nvkush in order to make this work, no other kexts required editing in 10.5.6.
    4. boot with the display connected to your old 7300GT. If NVkush has done its thing, your screen on your 7300GT might be rotated 90 degrees. this is ok.
    5. switch display to 9800GTX+
    6. if you have a “hole” covering the top left portion of the screen that you cannot see, switch display back to 7300GT, wait to see your desktop background, and switch back.
    7. Check system profiler for quartz extreme and core image support.
    8. ENJOY!!!


    http://325i.org/2009/01/28/howto-use-a-pc-geforce-9800gtx-in-a-real-mac-pro/
     
  21. MacVidCards Suspended

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    #21
    Makes me happy to see someone doing something to increase GPU options instead of just whining about lack of choices, etc.

    I am fairly certain that it should be possible to write a ROM for this card to work on Mac Pro with no other fiddling....it is G92 based, just like 8800GT.

    Keep up the good work. I have a 9800GTX here, so I may be trying this soon.
     
  22. Chaos123x macrumors 68000

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    #22
    Does Windows 7 use EFI?

    It would be great if PC cards all had EFI firmware.
     
  23. JollyRogers macrumors regular

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    #23
    projct, quick question... can you now remove your 7300gt. I am thinking no, because the efi is being used for boot.

    I am guessing here, but everytime you boot the MP, do you have to switch displays from the 7300gt to the 9800gtx for this to work?

    Thanks for your efforts and good to see someone making progress.
     
  24. diamond.g macrumors 603

    diamond.g

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    #24
    The 64bit version can boot off EFI.
     
  25. zogman macrumors newbie

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    Feb 7, 2009
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    Boston Area
    #25
    Retail DVD install

    I think this may not be the best place to ask this but, has anyone installed Leopard from the retail DVD on more than one machine? I used the DVD to upgrade my G4 iBook and then decided to try building a hackint0sh. So I bought a GA-EP45-DS3L mobo and EVGA GeForce 9800 GT card and installed Kalyway. Then I decided to buy an EFI-X usb device because it promised to allow me to update my OS from Software Update.

    So far I can't get the installer DVD to run from the EFI-X loader.

    Anyone else struggling with this? My mobo's BIOS is "f9".

    Thanks.
     

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