Hi, I downloaded 12.10 image and tried to boot from it. But whenever I try (irrespective of medium DVD/USB), it shows a message "secure boot not enabled" and screen blanks. I waited more than 10 minutes hoping it would switch to some second handler if any. But it didn't.
My machine is Lenovo Ideapad Z570, and it has no option to enable or disable UEFI. Please Help. Ubuntu 12.04, Mint Maya are working fine.