Go to System Preferences > Time Machine > turn on "Back Up Automatically." Do a manual backup (right-click the Time Machine menu bar icon > "Back Up Now").
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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 Go to System Preferences > Time Machine >
Use Time Machine or an external drive to back up everything. Go to System Preferences >