Just downloaded and installed mountain lion yesterday.. one of the big features i bought it for.. airplay mirroring is no where to be found ! whats up? i have a imac bought dec 2010, and second generation apple tv with up to date software.
iMac, Mac OS X (10.6.7)
Read the specs. It's righ there in black and white, not hidden.
http://www.apple.com/osx/specs/
AirPlay Mirroring
Requires a second-generation Apple TV or later. Supports the following Mac models:
iMac (Mid 2011 or newer)
Mac mini (Mid 2011 or newer)
MacBook Air (Mid 2011 or newer)
MacBook Pro (Early 2011 or newer)
how to i tell if my imac supports airplay mirroring
