This is about using software to take an existing Windows operating system (10 and 11) and creating an install disk to do a fresh install of the installation on other machines.
Convert the existing OS to a VHD using https://learn.microsoft.com/en-us/sysinternals/downloads/disk2vhd
After VHD is created you can load it into VirtualBox and make changes. Then recreate a VHD while in VirtualBox. Convert the VHD to .wim, then perhaps install .wim to .esd if necessary, create an install USB from a current Windows ISO using RUFUS, then replace the .wim or .esd file with the one from the VHD you edited.
Maybe. Yet to be tested fully.
https://www.tenforums.com/tutorials/72031-create-windows-10-iso-image-existing-installation.html
Script to create wim file in powershell
Here is a simple powershell script to convert VHD file to WIM file
#set the VHD mount folder
$Mount="c:\mount"
#create a folder c:\mount
Mkdir $Mount
#mount the c:\temp\spiderip.vhd to $Mount folder
Mount-WindowsImage -ImagePath "c:\temp\spiderip.vhd" -Path "$Mount" -Index 1
#Create new Wim image to c:\temp\spiderip.wim folder
New-WindowsImage -CapturePath "$Mount" -Name "spiderip image" -ImagePath "c:\temp\spiderip.wim" -Description "spiderip image" -Verify
#dismount the $Mount folder
Dismount-WindowsImage -Path "$Mount" -DiscardConvert from .wim to .esd (my win10 install disk uses .esd and when converting vhd to wim I need to change it).
dism /export-image /sourceimagefile:<file location>:\install.wim /sourceindex:<1,2,3,4> /destinationimagefile:<output location>:\install.esd /compress:recovery
DISM++ has tool to create a wim image (to replace the install iso one). Just a note.
DISM++ free software, but now 5 years old so not so much
Video: https://www.youtube.com/watch?v=2hEde5WuCSY
Site to download: https://github.com/Chuyu-Team/Dism-Multi-language
NT Lite, paid software
Video: https://www.youtube.com/watch?v=xLCWtC6UYrM
Video makers website on NT Lite: https://christitus.com/ntlite-guide/
Video, also on NT Lite: https://www.youtube.com/watch?v=_gMJNQ3yWNE
Site for download: https://www.ntlite.com