[Anaconda-devel] Re: Making Anaconda do hybrid BIOS+UEFI setups for legacy BIOS installs

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On Wed, May 18, 2022 at 11:21 AM Jiri Konecny <jkonecny@xxxxxxxxxx> wrote:
>
> Hi Chris,
>
> honestly, it looks to me like a hack which is required for the cloud
> images but shouldn't be used out of that. I don't like the solution
> much, it makes everything much more complicated especially for the
> "mbr/bios" and similar formats. I'm more inclined for the simplified
> current solution.
>
> Also I'm thinking if it would be really that helpful. Users usually
> don't change on the installed system between UEFI and BIOS boot, do they?
>
> Adding bootloader dev for the heads-up about this change and the discussion.
>

It does happen. Especially if there are problems in one mode vs the other.

But more importantly, this Change is designed as a step toward the
eventual removal of grub2-pc as a package. It may be in the future
that we'll have OpenCore or some other UEFI emulator for BIOS (similar
to what we do for a lot of ARM devices with u-boot), which allows for
the shipped GRUB codebase to be drastically simplified to just the
stuff for grub2-efi. Having legacy BIOS installs be hybrid BIOS+UEFI
would be very useful toward that goal.

I don't particularly want to add too many more partitioning modes. I'm
even a bit hesitant to change from inst.mbr to
inst.disklabel=(mbr|gpt) because the latter implies permanent support
of alternative disklabels. And frankly, I think we want to just get
down to GPT (and DASD for s390x) in the far future.


-- 
真実はいつも一つ!/ Always, there's only one truth!
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