Upgrading your Mac from High Sierra to macOS Catalina is a direct process, but it requires verifying hardware compatibility and preparing for the shift to 64-bit software. Step 1: Check Compatibility
. With a click, the App Store finally revealed the 8GB prize: macOS Catalina Chapter 3: The Long Descent (Download) The owner clicked how to update macos high sierra 10136 to 1015
This is the most significant hurdle when upgrading from High Sierra to Catalina. High Sierra can still run both 32-bit and 64-bit apps. To check which of your apps will break: Upgrading your Mac from High Sierra to macOS
Before any major OS upgrade, use Time Machine to back up your data to an external drive. Updates can fail, and data loss is a real risk. High Sierra can still run both 32-bit and 64-bit apps
. Your hardware must be one of the following to run Catalina officially: : Early 2015 or newer MacBook Air : Mid 2012 or newer MacBook Pro : Mid 2012 or newer : Late 2012 or newer : Late 2012 or newer : All models (2017) : Late 2013 or newer Apple Support Community 2. Prepare Your Mac Backup Data Time Machine