So far what I can see is that this new "BIOS" other than supporting the new UEFI spec is that it is not any different than anything we're already used to seeing. That meaning we can just put any OS on the board that you want. I think the problem with the dual boot thing is that it isn't really a supported scenario. Think that all Microsoft OS is built with either the OEM end user or for use in the Enterprise where dual boots aren't supported. Is a dual boot even officially supported under Windows 7?

Dual-booting is a integral part of the NT-Family OSes design from incept time, and they always installed a boot menu component by default, to confirm it.

Dual-booting is a integral part of the NT-Family OSes design from incept time, and they always installed a boot menu component by default, to confirm it.

Yes I know the function is built in and it is documented, but that doesn't mean it is officially supported.

UEFI SecureBoot is a security mechanism to protect the OS in enterprise environments. However, it can be turned off (which allows dual-booting again), at the expense of some system security.

Hmmm.... at least a number of clarifications given in the thread. As dencorso said... ditto!

windows will surely rock when it will launch its consumer preview.