It is final bootable OS X Mountain Lion 10. DMG File for Clean OS X Install.
OS X Mountain Lion ( version 10.
8) is the ninth major release of OS X ( now named macOS), Apple Inc. ' s desktop and server operating system for Macintosh computers. OS X Mountain Lion was released on July 25, for purchase and download through Apple' s Mac App Store, as part of a switch to releasing OS X versions online and every year, rather than every two years or so. Mac OS X Lion ( version 10.