On 20/01/2023 21:01, Pascal Hambourg wrote:

On 20/01/2023 at 21:26, Wol wrote:

quoted

I think you've just put your finger on it. Multiple EFI partitions is 
outside the remit of linux

I do not subscribe to this point of view. Distributions used to handle 
multiple boot sectors, why could they not handle multiple EFI partitions 
as well ?

Because that means that distros need to know all about EVERY OTHER 
OPERATING SYSTEM?

quoted

I really don't think the system manager - be it yast, yum, apt, 
whatever - is capable of even trying.

yum and apt are package managers, not system managers. FWIW, Ubuntu's 
grub-efi packages can deal with multiple EFI partitions in the same way 
grub-pc can deal with multiple boot sectors.

???

I don't know who's fault it was, probably Microsoft's, but I gave up 
trying to dual-boot a laptop ...

quoted

At the end of the day, it's down to the user, and if you can shove a 
quick rsync in the initramfs or boot sequence to sync EFIs, then 
that's probably the best place. Then it doesn't get missed ...

No, these are not adequate places. Too early or too late. The right 
place is when anything is written to the EFI partition.

I would agree with you. But that requires EVERY OS on the computer to 
co-operate. I think you are being - shall we say - optimistic?

Fact: Other systems outside of linux meddle with the EFI. Conclusion: 
modifying linux to sync EFI *at the point of modification* is going to 
fail. Badly.

Cheers,
Wol