I downloaded the newest RHEL 8 ISO (9 GB) and created a bootable USB with a `dd` command in CentOS 7.9. But it would not boot at system startup. I tried it with 2 different USBs but to no avail.

Secondly I tried the `Rufus` software on Windows. It said that there is some kind of *"Lock"* on the ISO image from the creators, so it, (Rufus), also used the `dd` option to create the USB. The result is the same; it will not boot to start the installation process.

`dd if=rhel-8.4-x86_64-dvd of=/dev/sdd1` command was used.