Question marked as Top-ranking reply User profile for user: babowa babowa User level: Level 9 78,471 points Jun 29, 2019 3:51 PM in response to HadVT Because your hardware is too old.https://support.apple.com/kb/SP777?locale=en_US Show more Less Reply Link
User profile for user: Allan Jones Allan Jones User level: Level 9 73,214 points Jun 29, 2019 7:40 PM in response to HadVT Specifically, Mojave requires a graphics technology, Metal, that cannot be retro-fitted to 2011 and earlier iMacs. Show more Less Reply Link