SysPrep - Windows 10 Custom ISO

Create "Staging VM":

• Don't add a NIC to new VM
• Install Windows as normal, after it's first reboot it will ask to select region
• STOP HERE AND ENTER "AUDIT MODE"
• CTRL+SHIFT+F3
• Close System Preparation Tool for now

Disabling the “Consumer Experience” via GPO (gpedit.msc)

Computer Configuration > Administrative Templates > Windows Components > Cloud Content
Enable >> Turn off Microsoft consumer experiences

•  Add Back NIC to VM
•  Update Windows via regular methods
• Reboot to complete updates as needed, closing SySPrep each reboot
• Tweak Windows as desired, I don't bother tweaking untill after Windows Update as sometimes Windows Update overwrites my changes and I don't notice
• Removing Apps if desired, run the following in PowerShell:
• Download my powershell script and run as Administrator
• First you need to "Set-ExecutionPolicy RemoteSigned" in PowerShell to enable running scripts
• remove_uwp_apps_win10.ps1
• Note: these apps can be redownloaded via the Windows Store if desired, but they will not be included in the base Windows install.
• Once satisfied with VM shut down and export backup named "Ready for SySPrep"

• Power on and this time, run SySPrep with desired options

  cd C:\Windows\System32\Sysprep
  sysprep.exe /generalize /oobe /unattend:C:\Autounattend.xml /shutdown

• Once its done it should poweroff
• Now fire up the WinPE ISO and create a custom WIM image
• Extract image back to host computer
• THIS IS WHERE I SWITCH TO NTLITE!

• Split IMG into files smaller than 4GB's for FAT32 (Required for UEFI)

  Dism /Split-Image /ImageFile:win10sys.wim /SWMFile:install.swm /FileSize:3800

• Extract Regular Win10 ISO to C:\WinExtract
• Remove install.(esd/wim) from C:\WinExtract\sources\
• Copy over install*.swm files back into C:\WinExtract\Sources

• Create new ISO via the following in CMD

  cd C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Deployment Tools\amd64\Oscdimg\
  oscdimg -m -o -u2 -lCPBA_X64FRE_EN-US_DV5 -udfver102 -bootdata:2#p0,e,bC:\WinExtract\boot\etfsboot.com#pEF,e,bC:\WinExtract\efi\microsoft\boot\efisys.bin C:\WinExtract\ C:\Win10v1709-Custom.iso

• Inject any other drivers into ISO with whatever software you choose. I like to add the VMWare_Tools.ISO as well as the VirtIO KVM Drivers ISO and the NVidia Graphx drivers and VirtualBox Guest Additions.
• I just place them under a folder called "Drivers" then if you need a driver to load for windows installation you can just manually search that folder and windows should find the drivers automatically.

Notes:

• Start small with tweaks and then test/deploy and see how it goes before doing all of your tweaks
• Not all changes stuck, like changes to "View" and desktop shortcuts etc, but RegEdit and GPO changes stayed as well as programs which is enough of a "head start" for me.
• To make both UEFI and MBR ISO you can't have automatic partitioning in unattend.xml