Modify Windows Installation by custom bat file

Question

How can I with no usage of 3rd party tool modify Windows Installation by packing custom bat file into Windows 10 installer? I expect that installer start it after installation with privileges that bat will able to modify registry for example.

Answer 1

You need to make a master image and then use Sysprep to setup the image for copying by creating an unattended answer file (unattend.xml), and to include your custom batch file.

Specifically, look into Setupcomplete.cmd usage:

Add a Custom Script to Windows Setup:

Windows Setup scripts: Setupcomplete.cmd and ErrorHandler.cmd are custom scripts that run during or after the Windows Setup process. They can be used to install applications or run other tasks by using cscript/wscript scripts.

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1. After Windows is installed but before the logon screen appears, Windows Setup searches for the SetupComplete.cmd file in the %WINDIR%\Setup\Scripts\ directory.
2. If a SetupComplete.cmd file is found, Windows Setup runs the script. Windows Setup logs the action in the C:\Windows\Panther\UnattendGC\Setupact.log file.