WinPE: Windows PE utility (Wpeutil)

The Windows PE utility (Wpeutil) is a command-line tool that enables you to run commands during a Windows PE session. For example, you can shut down or restart Windows PE, enable or disable a firewall, set language settings, and initialize a network.

Examples

Shutdown

wpeutil shutdown

Disable Firewall

wpeutil DisableFirewall

Set the Keyboard layout

wpeutil SetKeyboardLayout <LCID>:<KeyboardIdentifier>
Example changing the Keyboard layout to Swiss German:

wpeutil SetKeyboardLayout 2055:00000807

Locale ID (LCID): https://docs.microsoft.com/en-us/previous-versions/windows/embedded/ms912047(v=winembedded.10)
KeyboardIdentifiers: https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/windows-language-pack-default-values

List the supported Keyboard Layouts

wpeutil ListKeyboardLayouts <LCID>

Set multiple languages in priority order

wpeutil SetMuiLanguage de-CH;en-US

More information's: https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/wpeutil-command-line-options