Linked by moondevil on Wed 11th Jul 2012 22:49 UTC
Mac OS X Ars Technica is reporting that certain 64bit Mac models won't be able to run Mountain Lion. The problem is the graphic card drivers; these are still 32bit, and Apple is unwilling to update them to 64bit. A 64bit kernel can't load 32bit drivers, so that's that. Apple has a list of supported models on their Mountain Lion upgrade page, so you can easily check if your computer is capable of running Mountain Lion.
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RE: No biggie
by fithisux on Thu 12th Jul 2012 15:40 UTC in reply to "No biggie"
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That is why Apple should have allowed more participation from the community. Older macs could be used with Gnu-Darwin, Pure Darwin or some other Unixoid combination of GNU/BSD userland and Apple's kernel instead of render them useless. With open source drivers at least they could have used them without 3D acceleration. A VESA framebuffer or a user supported 2d accelerated driver can do a lot of stuff (developoment,simulations and even browsing and document writing). But if they have implemented a proper UEFI, at least they could have used a generic GOP driver.

But user contributed XNU unixoids are doomed without Apple's help. Puredarwin could be a place to start.

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