Mountain Lion drops support for several older Mac models ...
The march of progress continues in OS X Mountain Lion, and with it comes a new set of minimum requirements. An anonymous developer clued us into the minimum requirements for OS X 10.8, and there's bad news for some older Mac owners. Mountain Lion will only run on the following Macs:
Quote:
iMac (mid 2007 or later)
MacBook (13-inch Aluminum, 2008), (13-inch, Early 2009 or later)
MacBook Pro (13-inch, Mid-2009 or later), (15-inch, 2.4/2.2 GHz), (17-inch, Late 2007 or later)
MacBook Air (Late 2008 or later)
Mac Mini (Early 2009 or later)
Mac Pro (Early 2008 or later)
Xserve (Early 2009)
This means the following Macs which are supported under OS X Lion will not be able to run Mountain Lion (model identifiers in parentheses):
Quote:
Late 2006 iMacs (iMac5,1, iMac5,2, iMac6,1)
All plastic MacBooks that pre-date the aluminum unibody redesign (MacBook2,1, MacBook3,1, MacBook4,1)
MacBook Pros released prior to June 2007 (MacBookPro2,1, MacBookPro2,2)
The original MacBook Air (MacBookAir1,1)
The Mid-2007 Mac mini (Macmini2,1)
The original Mac Pro and its 8-core 2007 refresh (MacPro1,1, MacPro2,1)
Update: It slipped my mind that there were two pre-unibody plastic MacBooks introduced between the aluminum MacBook and the plastic unibody redesign, both of them with the model identifier MacBook5,2. Those MacBooks, which still feature the legacy pre-unibody case design and were manufactured in early- to mid-2009, are supported in Mountain Lion because they feature an NVIDIA GeForce 9400M graphics card instead of the integrated Intel GPUs in their predecessors.
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