Re: F37 Change: Deprecate Legacy BIOS (System-Wide Change proposal)

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On Thu, Apr 7, 2022 at 5:35 PM Samuel Sieb <samuel@xxxxxxxx> wrote:
>
> On 4/7/22 14:51, Jared Dominguez wrote:
> > On Thu, Apr 7, 2022 at 3:49 PM Samuel Sieb <samuel@xxxxxxxx
> > <mailto:samuel@xxxxxxxx>> wrote:
> >
> >     On 4/7/22 08:02, Jared Dominguez wrote:
> >      > This is a proposal. Nothing has changed yet. The choice is now
> >     whether
> >      > to go forward with it or come together with a cohesive
> >      > alternative, including one of the two listed in the proposal. But we
> >      > need a solution that accounts for the existing maintainers not
> >     having
> >      > capacity to continue maintaining legacy code. I've seen responses
> >     from
> >
> >     I haven't yet seen a clear answer about what code is "rotting" and
> >     which
> >     legacy code is too hard to maintain.  Is there something actually
> >     broken
> >     right now?
> >
> >
> > For one, syslinux hasn't seen an update in 3 years and a release in 7
> > years, and it has outstanding bugs. Legacy boot isn't where grub2 is
> > getting development attention. The current maintainers in Fedora won't
> > have capacity to continue maintaining legacy boot support in Fedora. As
> > grub2 continues to be developed for UEFI systems (ARMv8-9 and x86-64,
> > not to mention non-UEFI ppc64le and s390x), there is added risk of
> > regressions on legacy x86 boot that won't be getting developer attention.
>
> I don't understand why we're still using syslinux instead of grub for
> legacy boots, especially since I think now you can use the same grub.cfg
> file for both.

syslinux (really isolinux) is only used on installation media.

This comment from 2012 suggests we probably should have dropped
isolinux in favor of BIOS GRUB a while ago, but c'est la vie. I think
it's in scope to exchange syslinux for GRUB in the F37 cycle, pending
review of the effort required to do it.
https://mjg59.dreamwidth.org/11285.html?thread=345621#cmt345621


> There is always a risk of regressions, but if there is
> no current problem, then why is there this push to obsolete a lot of
> active hardware?  This is not comparable to the 32-bit removal where it
> was only a few really old systems.  This is going to affect decent
> systems that are less than 10 years old.  I have a work HP laptop from
> 2012 that has "experimental" EFI support that really doesn't work well
> and possibly a newer one as well, but I can't check it right now.


Given that Microsoft has had an exception for UEFI being required on
server hardware up until barely two years ago, I suspect RHEL folks
are going to have customers asking for reconsideration.


-- 
Chris Murphy
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