“Secure Boot” isn’t particularly secure but it does tend to make it harder to escape the Wintel monopoly. According to Matthew Garrett: “the Windows 8 setup environment doesn’t offer that reboot icon. Turn on a brand new Windows 8 system and you have two choices – agree to the Windows 8 license, or power the machine off. The only way to get into the firmware menu is to either agree to the Windows 8 license or to disassemble the machine enough that you can unplug the hard drive and force the system to fall back to offering the boot menu.
I’m firmly of the opinion that there are benefits to Secure Boot. I’m also in favour of setups like Fast Boot. But I don’t believe that anyone should be forced to agree to a EULA purely in order to be able to boot their own choice of OS on a system that they’ve already purchased.”
see mjg59 | Secure Boot isn't the only problem facing Linux on Windows 8 hardware
Well, at least those machines bearing “8” aren’t taking over the world as earlier versions did. That makes the problem of Black Hole Booting smaller. Expect a lot of folks to return PCs they can’t use if their intention was to install GNU/Linux. When are retailers going to demand open hardware on PCs?