updatewim actionfile is the file that contains the changes to apply to the sourcewim. The result is written to the destinationwim. rename //setup.exe setup.uda rename //sources/setup.exe setup.uda mkdir uda //sources add diskpart.txt //sources/uda add uda.cmd //sources/uda add netamd.inf //sources/uda add pcntpci5.sys //sources/uda By the way: the files to be added will have to exist :-)