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I know it isn't in Apple's list of supported Macs, but I want to know if anyone has tried it.

Also, my Mac has 4GB of ram and plenty of disk space. It currently runs Lion.

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You want it so bad? –  webjunkie Jul 27 '12 at 22:45
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2 Answers 2

up vote 5 down vote accepted

As Steve Moser says there is no support for 32 bit drivers and Mountain Lion will refuse to install on the macs which had 32 bits drivers (someone seems to be too lazy to rewrite them?).

If this answer is not the one you want to hear, then you can install Mountain Lion the hard way. Because there is a way (which worked for the preview).

You will need another compatible mac (support) and you will have to do some hard drive switching.

The idea goes as follow:

  • Get Mountain Lion
  • On the target Mac remove the hard drive (target drive)
  • On the support Mac insert the hard drive (USB or internally)
  • Install Mountain Lion on the target drive
  • Put the target drive back in the target Mac
  • Boot on the target drive holding Cmd + V And write down the ID given in the error message "Incompatible Mac detected: ..."
  • Put the target drive back to the support Mac and on this drive in /System/Library/CoreServices edit PlatformSupport.plist
    • Add your board ID in the SupportedBoardIds section.
    • Add your model ID in the SupportedModelProperties section.
  • Put the target drive to the target Mac
  • Boot

You should be able to get to the desktop but without hardware graphics support.

To enable the graphics hardware support you will have to install the right kernel extentions. You could use kexthelper.

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The comment about laziness isn't constructive ;-) –  Graham Perrin Jul 30 '12 at 10:59
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No it isn't... Just releasing a little steam ;) –  Coyote Jul 30 '12 at 14:57
    
Steam scalds the dogcows of developers. Moof! ;-) –  Graham Perrin Jul 30 '12 at 15:03
    
commercial strategy... Apple should develop 32 bit drivers for Intel GMA X3100... –  logoff Aug 3 '12 at 8:32
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No, Mountain Lion requires 64-bit graphics drivers and mac formatted drivers don't exist for the graphics in the early 2008 White MacBook.

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