Dism /Export-Image /WIMBoot /SourceImageFile:C:\Temp\install.wim \
/SourceIndex:1 /DestinationImageFile:C:\Temp\install_wimboot.wim

md C:\mount\Windows
Dism /Mount-Image /ImageFile:"C:\Temp\install.wim" /Index:1 \
/MountDir:C:\mount\Windows

attrib -s -h C:\mount\Windows\Windows\System32\Recovery\winre.wim

move C:\mount\Windows\Windows\System32\Recovery\winre.wim C:\Temp\winre.wim

Dism /Optimize-Image /Image:C:\mount\Windows /WIMBoot

Dism /Unmount-Image /MountDir:C:\mount\Windows /Commit