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Mac OS Compatibility Guide for iMac and iMac Pro

Which versions of macOS does my iMac and Imac Pro support?

   
  27″ iMac Retina 5K 2020 (5700 / 5700 XT) iMac20,2 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
  27″ iMac Retina 5K 2020 iMac20,1 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
  27 iMac Retina 5K 2019 iMac19,2 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
21.5″ iMac Retina 5K 2019 iMac19,2 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
iMac Pro 2017 iMacPro1,1 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
27″ iMac Retina 5K Mid 2017 iMac18,3 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
21.5″ iMac 4K Mid 2017 iMac18,2 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
21.5″ iMac Mid 2017 iMac18,1 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
27″ iMac Retina 5K Late 2015 iMac17,1 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
21.5″ iMac Late 2015 iMac16,2 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
21.5″ iMac Late 2015 iMac16,1  Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
27″ iMac Retina 5K Late 2014 / Mid 2015 iMac15,1 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
21.5″ iMac Mid 2014 iMac14,4 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x Yes
21.5″ iMac Late 2013 iMac14,3 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x No
27″ iMac Late 2013 iMac14,2  Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x No
21.5″ iMac Late 2013 iMac14,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x No
27″ iMac Late 2012 iMac13,2 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x No
21.5″ iMac Late 2012 iMac13,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x Yes
CatalinamacOS 10.15.x Yes
Big SurmacOS 11.0.x No
27″ iMac Mid 2011 iMac12,2 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
21.5″ iMac Mid / Late 2011 iMac12,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
27″ iMac Mid 2010 iMac11,3 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
21.5″ iMac Mid 2010 iMac11,2 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
27″ iMac Late 2009 (Core i5, i7) iMac11,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
27″ iMac Late 2009 (Core 2 Duo) iMac10,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
21.5″ iMac Late 2009 iMac10,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x Yes
High SierramacOS 10.13.x Yes
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
20″ iMac Early / Mid 2009 iMac9,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
24″ iMac Early 2009 iMac9,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
24″ iMac Early 2008 iMac8,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
20″ iMac Early 2008 iMac8,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
24″ iMac Mid 2007 iMac7,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
20″ iMac Mid 2007 iMac7,1 Mac OS Compatibility
Mountain LionOS X 10.8.x Yes
MavericksOS X 10.9.x Yes
YosemiteOS X 10.10.x Yes
El CapitanOS X 10.11.x Yes
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
24″ iMac Late 2006 iMac6,1 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
17″ iMac Late 2006 (CD) iMac5,2 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
20″ iMac Late 2006 iMac5,1 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
17″ iMac Late 2006 iMac5,1 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
17″ iMac Mid 2006 iMac4,2 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
20″ iMac Early 2006 iMac4,1 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No
17″ iMac Early 2006 iMac4,1 Mac OS Compatibility
Mountain LionOS X 10.8.x No
MavericksOS X 10.9.x No
YosemiteOS X 10.10.x No
El CapitanOS X 10.11.x No
SierramacOS 10.12.x No
High SierramacOS 10.13.x No
MojavemacOS 10.14.x No
CatalinamacOS 10.15.x No
Big SurmacOS 11.0.x No