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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You do realise that you can keep using Mac OS X Lion after Mountain Lion is released - your computer isn't going to spontaneously combust into a giant fireball.

No, but it means that if you want to target Mountain Lion, or take advantage of the new goodies in Objective-C you are forced to buy new hardware.

For many companies this is a big problem.

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