MacOS 11.0 Big Sur

Apple will likely release MacOS 11.0 "Big Sur" this month. This OS includes compatibilty for Apples forthcoming 'Apple Silicon' ARM-based computers as well as numerous security enhancements. Because this is a major update, we reccommend waiting to update for any system required for scientific data processing. MacOS 10.14 "Mojave" or 10.15 "Catalina" are currently supported.

Known issues

  • QT applications ( such as CCP4, PyMOL, Schrodinger) : Known cosmetic and functional issues

  • Safari 14 is not compatible with CCP4 Cloud (, likely other services.