The oobeSystem configuration pass configures settings that are applied during the end-user first-boot experience, also called Windows Welcome. The oobeSystem configuration pass settings are processed before a user first logs on to Windows®.
Out-of-Box-Experience (OOBE) runs the first time the user starts a newly configured computer. OOBE runs before the Windows shell or any additional software runs, and it performs a small set of tasks necessary to configure and run Windows.
The following diagram illustrates the process that occurs when an end user first boots a newly configured computer. The result is Windows Welcome or an end user's first-boot experience.
You can configure Windows to boot to Windows Welcome by running the sysprep command with the /oobe option. By default, after running Windows Setup, Windows Welcome starts.