UEFI secure boot

Colin Watson cjwatson at ubuntu.com
Mon Sep 26 18:53:16 UTC 2011

On Fri, Sep 23, 2011 at 02:13:29PM -0500, Billie Walsh wrote:
> On 09/23/2011 12:58 PM, Frank wrote:
> >Check
> >http://news.softpedia.com/news/Windows-8-PCs-with-UEFI-Secure-Boot-Won-t-Lock-Out-Other-Platforms-223377.shtml
> From: http://en.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface
> Linux has been able to use EFI at boot time since early 2000, using
> the elilo EFI boot loader or, more recently, EFI versions of GRUB.

I'm afraid that's not relevant.

The recent news pertains to a new release of UEFI, version 2.3.1, which
introduces "secure boot" as an optional feature (although one we would
not be surprised to see many OEMs enable by default).  Sure, GRUB can
boot under such a system - if you get it signed by an authorised key,
implying that you can't effectively install a modified version, or if
you disable "secure boot" in your firmware setup, which not only sounds
bad but it seems may well also impede dual-booting Windows.

Colin Watson                                       [cjwatson at ubuntu.com]

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