grubby changes the per-kernel options (in the entries files), it has never cared about what was in /etc/default/grub.
Typically /etc/default/grub is useless because typically no one ever runs grub2-mkconfig, so the file is kind of pointless.
And kernel installs copy the options from one of the other kernels(likely the currently booting on), so if you have the right options on the other kernels then it will copy the right options.
On Sat, Jan 7, 2023 at 7:43 PM Stephen Morris <samorris@xxxxxxxxxxxxxxx> wrote:
On 7/1/23 18:43, Tim via users wrote:
> On Sat, 2023-01-07 at 14:36 +1100, Stephen Morris wrote:
>> I've just done an update which installed kernel 6.0.16 and I forgot
>> to run grub2-mkconfig, and when I booted from the grub menu's defined in
>> /boot/grub2/grub.cfg presumably updated by grubby, it did not run
>> initrd, the grub.cfg file generated by grub2-mkconfig does run initrd.
> I have to ask, since I see a lot of grubby posts (pun intended):
>
> I've *NEVER* run grub2-mkconfig. I've always just yum/dnf update (do
> all current updates), or just dnf update kernel (if I wanted to
> specifically just do that), and it's always installed the new kernel
> properly all by itself. No further action was required by me.
>
> What are people doing to their systems that they paint themselves into
> a corner that they have to manually manage this, then have to pick up
> the pieces when it doesn't work?
>
I have always run grub2-mkconfig both for legacy and uefi environments
because in the past grubby did not honour the configuration I specified
in /etc/default/grub. For example, I always specify that I want
sub-menus for all linux environments and grubby always refused to do
that, whereas grub2-mkconfig always did, hence I always used that.
regards,
Steve
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