DISM /Mount-image /imagefile:D:\Images\Windows_10_Ent_x64_LTSC_2019_Custom_Installer_2021-04-27\sources\install.wim /index:1 /MountDir:D:\Images\MountedImages

Dism /Unmount-Image /MountDir:D:\Images\MountedImages /Commit /checkintegrity