If the App Store method fails or you are running a newer version of macOS (like macOS Ventura or Sonoma) and need the installer for another machine, you can use Apple's built-in command-line tool via Terminal. Step-by-Step Instructions: Open the app (found in Applications > Utilities).
The script will download the raw files ( InstallAssistant.pkg or individual component chunks) directly from ://apple.com . download catalina 10157 full installer high quality
With your bootable USB drive prepared, you are ready to install macOS Catalina. If the App Store method fails or you