You are trying to mount a custom DLL to preboot configuration.
GSS 3.3 RUx
Note:
Modifying startup.bat and adding the necessary command(s) is not part of what we can assist directly since it is a customization.
What you can do is to modify the startup.bat and include the necessary command to mount the custom DLL (in this example, it is called mobilenetworking.dll)
Edit the startup.bat file and add the script to mount a dll.
Something like this (but it is up-to the customer to find the right command and proper script):
Regsvr32 /S "%File%\mobilenetworking.dll"Note: If the files are not in a folder but in the same structure as startup.bat that will be at the root of X:\ when the preboot is compiled.