On Wed, Jul 27, 2022, at 4:47 PM, Lennart Poettering wrote:
> On Mi, 27.07.22 16:19, Chris Murphy (li...@colorremedies.com) wrote:
>
>> >> Boot Loader Spec defines $BOOT as either EFI System partition (ESP) or 
>> >> Extended Boot Loader Partition (XBOOTLDR), and in effect they need to be 
>> >> FAT in order to fulfill the interoperability intent of the spec, because 
>> >> it is a shared $BOOT across all distros.
>> >
>> > You can use any FS you want with efifs[1].
>>
>> Yeah, but it's impractical:
>>
>> * $BOOT is supposed to be readable by all distros that share $BOOT
>
> Hmm, afaik fedora installs /boot/ currently as ext4, no? *Every* Linux
> OS should be able to mount that...

I'm talking about distro bootloaders being able to read $BOOT in the pre-boot 
environment.

If Fedora decides $BOOT Is ext4, that binds other distros looking to adopt BLS 
into shipping signed efifs ext4 too, in order to use the same $BOOT format we 
are. Or else, ignore our XBOOTLDR and create their own, in which case we're 
right back to square one, which is mutually exclusive /boot, no sharing or 
cooperation between distros.


-- 
Chris Murphy
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