Yeah that's pretty much it. But win11 takes the entire disk by default so it's a process to dd the current image, install win on metal, resize win using win since ntfs is fuckey, reinstall iso to blank partition
Or
Dd current install and write to an SD, install win on metal, resize win in win and move only boot from SD to metal.
There's also the lazy man's method of stick win on an external but where's the zaz?