Why would you boot a VM from a real USB drive?
(that is what I understood you tried to do)
dd works as well as cp works as well as cat works as well as … a few other options
or install Ventoy to your USB drive - and then simply copy whatever .iso to it
and keep using the free space on the USB for other files
instead of having it hogged by one single iso and being unusable otherwise
So you were lucky
It wasn’t my first ISO that didn’t work.
And as I said. DD works everytime for Manjaro, Arch, Ubuntu or any other distro. I believe that it didn’t work for Windows ISO.
And for vSphere too.
Ventoy looks nice. Especially for USB drive with 64GB free space