Mountain Lion may drop support for older Macs (The Verge)
It appears that OS/X 10.8 won’t work on many Macs more than about three years old.
Apparently this is a consequence of cleaning up its 64-bitness, and so losing support for 32-bit EFI bootloaders. (The 10.7 release already dropped support for 32-bit CPUs, such as the Core Duo used in the earliest Intel Macs.)
If this applies to the eventual release as well as the developer preview, that means it won’t run on any of the Macs available to me—not on either of the Mac Minis on my desk at work, nor the Mini I use for development at home, nor my wife’s MacBook Pro, nor indeed my mother’s MacBook.
(I’d better get ready to update this OS/X build compatibility page.)
Really though, this post is an excuse to include a picture of a Sad Lion drawn by my son.