uh my brain melted from reading that.. plus i am confused.
This is they
Right-click the ISO file and select Mount . This will create a “virtual” bootable disc. Double-click on it to view the files within. Double-click setup.exe to start Windows 11 setup.
Virtual bootable disk which is your DVD drive... not a real one. It gives you that if the iso type of file isn't linked to something else by accident... happened to me once but 99% time should be OK.
You need the iso file from here:
https://www.microsoft.com/en-gb/software-download/windows11
That gives you the virtual drive.... but as I've said countless times once started when it comes to install you don't select update drivers now, change that to no or whatever. Faster and doesn't lead to drivers incorrectly installed. If it does install, all drivers get updated as part of the installed. Change early on and you may get lumbered with incompatible ones.
You might have other problems after that but that's how you update from ISO. Keep files and programs.