Shopnavigation
Updating from macOS High Sierra 10.13.6 to 10.15 is a straightforward process that requires some preparation and patience. By following these steps, you'll be able to enjoy the latest features, security patches, and performance enhancements available in macOS 10.15. If you encounter any issues during the update process, don't hesitate to reach out to Apple Support or visit an Apple Store for assistance.
Your drive has a read-only snapshot that conflicts. Fix: Restart, hold Cmd + R to enter Recovery Mode. Open Disk Utility → First Aid on your main drive. Then try the installer again. If that fails, you may need to erase the drive (from backup) – last resort. how to update macos high sierra 10.13.6 to 10.15
Open System Preferences > Software Update (or the App Store "Updates" tab) to ensure High Sierra is fully patched to version 10.13.6 before jumping to 10.15. 3. How to Download and Install macOS Catalina Updating from macOS High Sierra 10