Hello,
I've had a confusing problem with grub2 for some time now. I'm now running
Fedora 31, but ever since upgrading to to Fedora 30 grub has always defaulted
to selecting the 3rd entry. This means that unless I stop it, Grub will always
boot my oldest installed kernel.
* My system is dual
Thank you!
I wrote that post from memory, so please excuse the mistake with the grub2
switch, without that switch the correct kernel is returned as the default boot
kernel.
While I could remove the Fedora 30 kernel(s), that doesn't fix the problem. As
soon as I end up with 3 bootable kernels
I just tested removing one of the old kernels again. It is still stubbornly
booting the 3rd entry, which is now the Recovery option!
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I bet it's something to do with the change to BootLoaderSpec-style
configuration files in fedora 30!
https://fedoraproject.org/wiki/Changes/BootLoaderSpecByDefault
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Thanks!
# grub2-editenv list
saved_entry=2dc3a3c6f8494c8fb93c27f99dc3a246-5.3.8-300.fc31.x86_64
boot_success=1
boot_indeterminate=0
kernelopts=root=UUID=ac6336b1-7fd2-43d7-af44-51b592f3ab8f ro rhgb quiet
For reference, I now have 2 Fedora 31 kernels:
# rpm -q kernel
kernel-5.3.7-301.fc31.x86_64
> What is the output of "grub2-editenv list"?
As mentioned:
# grub2-editenv list
saved_entry=2dc3a3c6f8494c8fb93c27f99dc3a246-5.3.8-300.fc31.x86_64
boot_success=1
boot_indeterminate=0
kernelopts=root=UUID=ac6336b1-7fd2-43d7-af44-51b592f3ab8f ro rhgb quiet
The saved_entry field matches what grubb
> I have no idea how it determines the newest, but the saved
> kernel is saved in the grubenv file which you can edit
> with the grub2-editenv command (but only after getting
> hundreds of errors because the command line syntax
> for editenv is very obscure and easy to scre up :-).
Thank you.
T
> I think the problem is that just tells Fedora to use the previously
> saved entry as its default, and there's other things (perhaps more than
> one) that determine what will actually be the default.
>
> In the old grub (which was easier to follow the instructions) if you
> wanted a particular bo
