/Gen-LangIni /Distribution: Generates a new lang.ini file which is used by setup to define the language packs inside the ...

/Gen-LangIni /Distribution:

  Generates a new lang.ini file which is used by setup to define the language 
  packs inside the image and outside in the distribution. It also defines the 
  default UI language for setup.
  The new Lang.ini file will be added to the sources folder of the Windows 
  distribution.
  This command is not supported against an online image.

  A distribution is a folder that contains the source files for
  Windows products that you install.  It may also contain
  additional device drivers and application files.

  WARNING: You will not be prompted for permission to overwrite an existing 
           lang.ini file. The existing lang.ini file will be overwritten.

    Examples:
      DISM.exe /Image:C:\test\offline /Gen-LangIni 
        /Distribution:D:\distribution

English
English (United States)
Deutsch (Deutschland)
German (Germany)
Français (France)
French (France)
日本語
Japanese
한국어
Korean
Русский
Russian