Am Samstag, 7. Oktober 2017 schrieb Tobias Hunger:

> On Sat, Oct 7, 2017 at 3:46 PM, Didier Kryn <kryn@???> wrote:
> >     Then maybe I misunderstood the reason for EFI.

>
> UEFI is a huge step forward in pretty much all areas and makes booting
> both simpler and more powerful.
>
> Grub on BIOS basically works like this: the one MBR is read by BIOS
> and executed (512 bytes!). That contains code to chain load some more
> code (usually from a fixed set of sectors on disk!). That is phase 1
> of the boot loader. That has enough smarts to find a hard-coded
> partition and read phase 2 from there. Phase 2 will then load a ton of
> modules and some configuration files and do the actual work.
>
> With UEFI the firmware just loads a efi binary with everything:-) MUCH simpler.
>
> UEFI has a couple more features:
>
> * UEFI allows for better hardware support (graphical login at full
> resolution, mouse support, RAID drivers, etc.)
> * UEFI allows for more security with secure boot. E.g. my thinkpad
> *only* boots things that I have signed with my key.
> * UEFI allows for different OSes living next to each other peacefully,
> without the constant fight over who writes the MBR and with that
> defines the boot loader.

You forgot to mention that UEFI is the best code in the world written by the the best of the best and therefore absolutely secure.

Nik

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