Before running the installer:
Click the Apple logo (top-left) → “About This Mac.” Under the “Overview” tab, you’ll see the model and year. If your Mac is from 2012 or later (except 2012 Mac Pro cheese grater), you’re likely fine. how to update macos high sierra 10.13.6 to 10.15
: Ensure you have a strong connection, as the installer is approximately 8GB. 3. Step-by-Step Installation Before running the installer: Click the Apple logo