Re: UEFI multiboot control usurped with each kernel update

[Pascal Hambourg]

Le 18/10/2018 à 05:54, Felix Miata a écrit :
> Felix Miata composed on 2018-08-09 01:10 (UTC-0400):
>
> > With 3 distro installations on one disk, each OS as a kernel update is installed
> > updates NVRAM to make its entry in the ESP partition top priority. How can I
> > stop that from happening, so that my choice of priority remains first instead of
> > me needing to remember before shutdown or reboot to run efibootmgr to put it
> > back like it was before the kernel update? I don't want to prevent the update
> > from creating a new /boot/grub/grub.cfg, only from usurping boot priority.

What are these distributions ? The ones I know use GRUB EFI and 
reinstall it only when installing or updating GRUB packages, not when 
installing or updating a kernel. The latter just requires updating grub.cfg.

> What I've been doing is commenting out the EFI partition line in fstab of all 
> distros except the
> one I wish to retain boot priority in NVRAM. So far it seems to be effective in 
> preventing
> updates usurpation. Can anyone think of reason(s) why this might be a bad idea? 
> So far, I've
> come up with nothing.

It seems that grub-install aborts immediately if the EFI partition is 
not mounted, so it should be fine if all distributions use GRUB.