How To Update Macos High Sierra 10.13.6 To 10.15 ((exclusive)) Access
Upgrading macOS High Sierra 10.13.6 to 10.15: A Step-by-Step Guide
- You need a modern web browser (Chrome/Edge no longer support High Sierra).
- You want access to newer versions of Adobe Creative Cloud or Microsoft 365.
- You have an SSD (Solid State Drive). Catalina runs terribly on old spinning hard drives.
Check 32-bit apps: Catalina does not support 32-bit apps. Many older programs (like older versions of Microsoft Office or Adobe CS6) will stop working. how to update macos high sierra 10.13.6 to 10.15
- Apple menu → About This Mac → Storage → Manage.
- Delete or move large media to external drive or cloud.