I get the error in Rufus:
The image is either non-bootable, or it uses a boot or compression method that is not supported by Rufus...
I downloaded a DVD zip file and used 7-zip to extract.
I appreciate any help. Thanks
some notes here https://docs.opnsense.org/manual/install.html
That's what I followed.
ok, maybe a different tool would serve you better. Rufus is only one of many.