Lesson 2. Update, Upgrade, or Reinstall macOS
Goals
-
Describe the differences between a macOS update, upgrade, and reinstallation
-
Describe the macOS installer
-
Verify system information
-
Update macOS
-
Upgrade macOS
-
Reinstall macOS
-
Troubleshoot an upgrade or reinstallation
Every new Mac comes with the Mac operating system. To get the latest features and security updates, you will eventually need the latest macOS. If you have a qualifying Mac, you can upgrade at no cost.
Note
Some exercises in this lesson involve significant changes to your Mac setup. Some of the steps are difficult or impossible to reverse. If you perform the exercises in this lesson, do so on a spare Mac or an external disk that doesn’t contain critical data. ...
Get macOS Support Essentials 10.15 - Apple Pro Training Series: Supporting and Troubleshooting macOS Catalina now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
