PowerShell scripts to create a WinPE 4.0 wim/ISO

I have been  a WinPE hacker since it was only available to SA subscribers. With Vista it was free to the world, and I started moving all my setup processes to it. I have always used the dos batch scripts found in this forum to create a new WinPE ISO. Since WinPE 4.0 is coming out with Windows 8 (if not before (I don’t know timelines)), I wanted to modify the dos batch files I rely on to work with WinPE 4.0. Since WinPE 4.0 has PowerShell in it, I wanted to migrate those dos batch files to PowerShell functions. Working from the dos batch files linked above and this post I created the functions below. They have numbers in their names because they are the steps to follow when creating a new ISO.

Function JBMURPHY-WinPE-1MakePEDirectory{
	Param($OSArchitecture="x86")

 remove-item -force "c:\PE\winpe_$OSArchitecture"
 New-Item c:\PE\winpe_$OSArchitecture\ISO\sources -type directory -force
 New-Item c:\PE\winpe_$OSArchitecture\mount -type directory -force
 copy-item "C:\Program Files\Windows Kits\8.0\Assessment and Deployment Kit\Windows Preinstallation Environment\$OSArchitecture\winpe.wim" "c:\PE\winpe_$OSArchitecture\ISO\sources\boot.wim"
 copy-item "C:\Program Files\Windows Kits\8.0\Assessment and Deployment Kit\Windows Preinstallation Environment\$OSArchitecture\Media\*" "c:\PE\winpe_$OSArchitecture\ISO\" -recurse
 copy-item "C:\Program Files\Windows Kits\8.0\Assessment and Deployment Kit\Deployment and Imaging Tools\$OSArchitecture\Oscdimg\etfsboot.com" "c:\PE\winpe_$OSArchitecture\"

}

Function JBMURPHY-WinPE-2Mount{
	Param($OSArchitecture="x86",$WimFile="c:\PE\winpe_$OSArchitecture\ISO\sources\boot.wim")
	DISM.exe /Mount-Wim /WimFile:$WimFile /index:1 /MountDir:C:\PE\winpe_$OSArchitecture\mount
}

Function JBMURPHY-WinPE-3.0AddPAckages{
	Param($OSArchitecture="x86",$WimFile="c:\PE\winpe_$OSArchitecture\ISO\sources\boot.wim")
	$OCsPATH="C:\Program Files\Windows Kits\8.0\Assessment and Deployment Kit\Windows Preinstallation Environment\$OSArchitecture\WinPE_OCs"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\WinPE-Scripting.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\en-us\WinPE-Scripting_en-us.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\WinPE-WMI.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\en-us\WinPE-WMI_en-us.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\WinPE-MDAC.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\en-us\WinPE-MDAC_en-us.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\WinPE-HTA.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\en-us\WinPE-HTA_en-us.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\WinPE-NetFx4.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\en-us\WinPE-NetFx4_en-us.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\WinPE-PowerShell3.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\en-us\WinPE-PowerShell3_en-us.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\WinPE-DismCmdlets.cab"
	dism /image:C:\PE\winpe_$OSArchitecture\mount /add-package /packagepath:"$OCsPATH\en-us\WinPE-DismCmdlets_en-us.cab"
}

Function JBMURPHY-WinPE-5UnMount-NoCommit{
	Param($OSArchitecture="x86",$WimFile="c:\PE\winpe_$OSArchitecture\ISO\sources\boot.wim")
	DISM.exe /unmount-Wim /MountDir:C:\PE\winpe_$OSArchitecture\mount /discard
}
Function JBMURPHY-WinPE-5UnMount{
	Param($OSArchitecture="x86",$WimFile="c:\PE\winpe_$OSArchitecture\ISO\sources\boot.wim")
	DISM.exe /unmount-Wim /MountDir:C:\PE\winpe_$OSArchitecture\mount /Commit
}

Function JBMURPHY-WinPE-6MakeISO {
	Param($OSArchitecture="x86",$WimFile="c:\PE\winpe_$OSArchitecture\ISO\sources\boot.wim")
	$command="C:\Program Files\Windows Kits\8.0\Assessment and Deployment Kit\Deployment and Imaging Tools\$OSArchitecture\Oscdimg\oscdimg.exe"
	&$command  -n -bc:\PE\winpe_$OSArchitecture\etfsboot.com c:\PE\winpe_$OSArchitecture\ISO c:\PE\winpe_$OSArchitecture\winpe_$OSArchitecture.iso
}

I have not tried this on x64, but I think you would need to pass -OSArchitecture amd64 to each function . Is it me or does Microsoft flip-flop between x64 and amd64 naming conventions?