copype amd64 c:\winpe_amd64
dism /mount-wim /wimfile:c:\winpe_amd64\media\sources\boot.wim /index:1 /mountdir:c:\winpe_amd64\mount
:Copy over the x64 folder's contents to the c:\winpe_amd64\mount\ directory
:Do not copy over the entire x64 folder, just the contents.
:ALSO don't forget to copy over your install.esd, install*.swm, or install.wim file to the c:\winpe_amd64\media\sources\ folder
:**Make sure to add-package the winrecfg packages. I'll use an example directory here:
dism /image:c:\winpe_amd64\mount /add-package /packagepath:c:\murphy78-DiskPart-Apply-v1.2.6\x64-winrecfg-packages\
:that should add both the packages
:you can add any other packages at this point
dism /image:c:\winpe_amd64\mount /cleanup-image /startcomponentcleanup /resetbase
dism /unmount-wim /mountdir:c:\winpe_amd64\mount /commit
dism /export-image /sourceimagefile:c:\winpe_amd64\media\sources\boot.wim /sourceindex:1 /destinationimagefile:c:\winpe_amd64\boot.wim /checkintegrity
move /y c:\winpe_amd64\boot.wim c:\winpe_amd64\media\sources\
:Make boot-prompt image with UEFI boot support (press any key blah blah)
oscdimg -o -u2 -udfver102 -bootdata:2#p0,e,bc:\winpe_amd64\fwfiles\etfsboot.com#pEF,e,bc:\winpe_amd64\fwfiles\efisys.bin -l