Before starting, ensure your Mac model officially supports Catalina. Because Catalina requires a , some older machines that ran High Sierra cannot move forward to 10.15. Compatible Models: MacBook: Early 2015 or newer MacBook Air: Mid 2012 or newer MacBook Pro: Mid 2012 or newer Mac mini: Late 2012 or newer iMac: Late 2012 or newer iMac Pro: 2017 Mac Pro: Late 2013 or newer Minimum System Requirements: Memory: At least 4GB of RAM .
one by one, checking for driver updates. how to update macos high sierra 10.13.6 to 10.15
Connect your Mac to power and use an Ethernet cable if possible. Wi-Fi dropouts during installation can corrupt the system. Before starting, ensure your Mac model officially supports
Find 64-bit replacements before upgrading, or accept that you’ll lose access to those apps. If you rely on any legacy 32-bit apps, do not upgrade to Catalina – stay on High Sierra or Mojave. one by one, checking for driver updates