laptop with no BIOS? or BIOS reflash pain
C. P. Ghost
cpghost at cordula.ws
Thu Oct 25 01:24:00 UTC 2012
On Fri, Oct 19, 2012 at 1:57 PM, Polytropon <freebsd at edvax.de> wrote:
> On Fri, 19 Oct 2012 11:38:48 +0100 (BST), Anton Shterenlikht wrote:
>> Anyway, I think I've heard there are some laptops
>> with no BIOS, is this true?
> Per termini technici, yes.
> Some systems use EFI (or UEFI) instead of a BIOS. It's
> comparable to a much more advanced (than BIOS) micro-OS
> that initializes the hardware, connectes to the Internet,
> tells the manufacturer what you're doing and keeps limiting
> you in what you are allowed to install. :-)
(U)EFI is nothing new for us old farts: we've had OpenBoot on
Sun hardware for ages, and even though it didn't limit us w.r.t. the
OS you wanted to boot (that's why you can install FreeBSD/sparc64
on used Sun machines), it had its issues too. Mainly that it needed
a counter-part in hardware peripherals. E.g.: without F-Code in ROM,
a PCI-based frame buffer wouldn't be usable there, because it wouldn't
reply to the OpenBoot queries.
The point is that firmware CAN be a mini-OS and more powerful
than PC-BIOS. There's nothing wrong with that, and the flexibility
of OFW/OpenBoot was for us sysadmins invaluable, esp. with
diskless machines. What's wrong, is UEFI's DRM-scheme used to
prevent non-signed code to be loaded... without mandating in
the specs that the BIOS vendor MUST allow the device owner
to add his/her own keys to it. That's the evil part of it.
Cordula's Web. http://www.cordula.ws/
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