Re: unexpected behavior
On Tue, 28 Nov 2023 07:31:09 -0500
Dan Purgert <dan@djph.net> wrote:
> On Nov 27, 2023, Daniel Rodriguez wrote:
> >
> > Context: I have Debian 11 in a HDD and Windows 11 in a SSD.
> > Initially, the first running disk was my SSD.
> > Event: when I switched to HDD and Debian booted, this applied an
> > update and restarted as usual. Later it entered the BIOS setting on
> > its own[...]
>
> I've never seen a linux update trigger a machine entering BIOS / UEFI
> (although I do not use SecureBoot, so perhaps an update triggered some
> update necessary to the keys).
>
> Sounds like the BIOS detected the drives in a different order this
> time through (which I have definitely seen).
>
>
UEFI? I have UEFI dual boot on a laptop whose BIOS honours NextBoot but
not DefaultBoot. I therefore run a boot script on Linux to set NextBoot
to grub.
I try not to use Windows, one reason being that the BIOS resets
DefaultBoot to the Windows drive and I then need a rescue OS to get back
to grub.
So a running operating system can configure a UEFI BIOS (or whatever
it's called) and some BIOSes are broken and will override a user
configuration.
--
Joe
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