Before you begin the update process, it's essential to prepare your Mac and ensure a smooth transition. Here are a few things to do:
After successfully updating to macOS 10.15, here are a few things to do: how to update macos high sierra 10.13.6 to 10.15
If you see red “No” entries for critical software, Before you begin the update process, it's essential
Because Apple stopped signing Catalina certificates in late 2023, many old installers flag as damaged. If an app says it is damaged: Before you begin the update process