These days linux distros like Ubuntu are incredibly easy to install, and most computers are already setup to boot from the cdrom first. The problem is this sett

These days linux distros like Ubuntu are incredibly easy to install, and most computers are already setup to boot from the cdrom first. The problem is this setting has the ability to be worded in a way that would scare most users, so it is unlikely many new users will want to enable it. Part of the UEFI standard allows a "Do you trust this program?" popup for untrusted media when secure boot is enabled, which would make a lot more sense in this context. If your windows image is modified, it would essentially brick the computer otherwise. A popup would still scare users enough to get their computer looked at (if they didn't know enough themselves), or to be able to say "yes I trust this" if it is a linux system or a different setup (like windows 7, for example).