Question: what are the system requirements for mac os sierra?
Answer: iMac: Late 2009 or newer. MacBook and MacBook 12-inch: Late 2009 or newer. MacBook Pro: Mid 2010 or newer. MacBook Air: Late 2010 or newer. Mac Mini: Mid 2010 or newer. Mac Pro: Mid 2010 or newer. Xserve is no longer compatible.