What are InstallerDiagnostics and InstallerProgress?

2010-11-07 17:00

InstallerDiagnostics and InstallerProgress support the macOS installer system.

What is InstallerDiagnostics?

InstallerDiagnostics gathers diagnostic data during installations. When you install a .pkg package or run a macOS update, it records what happened: successes, failures, timing, and any errors. This data helps find the cause of failed installations.

What is InstallerProgress?

InstallerProgress runs the installation progress bar you see during macOS updates and package installations. It gets progress updates from the installer backend and shows them in the Installer app or the macOS update screen.

Where are installer logs?

Installation logs are saved to /var/log/install.log. You can view them in Console.app or from the command line:

log show --predicate 'subsystem == "com.apple.installer"' --last 1h

Should you worry?

No. They are normal macOS installer support processes that run during installations and then exit.

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