Booting a Windows recovery ISO made from a manually created recovery USB stick

[petrescatraian]

Prior to finding your tool I discovered this tutorial on how to make a recovery USB for Windows 7 and it worked flawlessly. I would like to use the same method in Ventoy in order to have both the Windows 7 Recovery environment and my other ISOs on the same USB flash drive. However I don't seem to find a way to do it.

• The created ISO appears as unbootable and doesn't start at all
  
• I tried creating a folder and pasting the original files there, then use the wimboot plugin, but while it did find boot.wim, Windows told me that it was unable to load any system file (although on my other USB everything went fine).
  

Is there anything I can do in order to add the Windows 7 Recovery that I created manually to Ventoy?