Open your web browser and navigate to the official Apple Support page for older macOS versions, or click the direct Mac App Store link for macOS Catalina.
macOS Catalina dropped support for older 32-bit graphics architectures. This means not every Mac capable of running High Sierra can upgrade to Catalina.
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Go to System Preferences > Software Update to install any final patches for 10.15.
This comprehensive guide walks you through verifying your hardware compatibility, preparing your drive, and successfully installing macOS Catalina. Step 1: Verify Hardware Compatibility Open your web browser and navigate to the
If you rely on legacy software, older versions of Microsoft Office (like Office 2011), or older Adobe Creative Suite apps, they will stop working entirely after the update. How to check for 32-bit apps on High Sierra: Click the and choose About This Mac . Click System Report .
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Your Mac will restart. Do not close the lid or turn off your Mac during this process. The screen may go black for long periods. Phase 4: Post-Update Steps
If you’d like, I can: