>I'd assume once you're in OS, all bets are off in terms of who can do what ...

aortega on April 5, 2013 | parent | context | favorite | on: AMI-Bios Sourcecode and UEFI Signing Key leaked?

>I'd assume once you're in OS, all bets are off in terms of who can do what to the hardware.

A common misconception. Even if you are running as ring-0, there are things that you cannot do, and only BIOS can. For example, executing code in SMM mode, mapping/hiding portions of memory, or changing some PCI configuration options that get "locked" after BIOS.

zdw on April 5, 2013 [–]

Sounds like a chicken/egg scenario if you're able to reflash the BIOS arbitrarily.