If you encounter issues during or after the update process, here are some troubleshooting steps:
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.
Click the column header to sort by "No". Any app marked is a 32-bit app and must be upgraded or replaced before you move to Catalina. Step 3: Clear Disk Space and Back Up Your Data how to update macos high sierra 10.13.6 to 10.15
Since 10.13.6 is an older version, the update will not appear in "Software Update." You must use the App Store. Open the macOS Catalina page in the Mac App Store. Click or Download .
For users still running macOS High Sierra (10.13.6), moving to macOS Catalina (10.15) represents a significant architectural shift. This is not a minor patch but a complete operating system upgrade that changes how your Mac handles apps, media, and security. If you encounter issues during or after the
To check your model, click the in the top-left corner of your screen and select About This Mac . Compare your model against the official Apple Hardware Compatibility List : 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
Your Mac is now fully updated to macOS Catalina 10.15. You can verify this by going back to to check the version number. Open the App Store and click the Updates tab to install any remaining security patches or supplemental updates released for Catalina. Any app marked is a 32-bit app and
Always plug your MacBook into a wall outlet during an OS update to prevent unexpected shutdowns. Step 3: Back Up via Time Machine