Re: Kernel entries are not updated in grub menu

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On Thu, Jul 4, 2019 at 2:56 PM Sergio Cipolla <lists@xxxxxxxxxxxx> wrote:
>
> I've had trouble too is a new Fedora install with grub on the partition (not MBR), I even eventually re-installed because I tried to revert to grubby-deprecated and then couldn't get the system to boot to graphical.target because of the entries needed for nvidia drivers, even after reverting to nouveau.
> So now, although there hasn't been no new kernels yet, my mantra will be don't touch what's working.
> I'll just do the manual grub2-mkconfig...
>
> As for the new bls, there are some meagre instructions at https://fedoramagazine.org/setting-kernel-command-line-arguments-with-fedora-30/
>
> Check 'grubby' manual, maybe.

My advice is to work through the problem with what Fedora currently
supports. We have active developers working on boot related bugs using
the Fedora 30 Bootloaderspec feature. But as grubby is deprecated,
it's less likely the old way of things will get much effort.
Regardless of what boot parameters you need to use, Bootloaderspec
should support it.

There's two ways to get the boot parameters set. You can put it in
/etc/default/grub on the GRUB_CMDLINE_LINUX= line and then run
'grub2-mkconfig' as appropriate for your firmware type. Or you can
edit the grubenv file directly with

$ sudo grub2-editenv - set kernelopts="fill in all your boot parameters here"

What I'll do first is list the boot parameters in the grubenv, and
then copy paste that into the quoted section in the above command, and
then make my additions/subtractions right on the command line before
hitting return.

$ sudo grub2-editenv list

-- 
Chris Murphy
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