Re: How to install new kernels in grub?

[Stephen Morris]

On 25/10/24 21:31, ToddAndMargo via users wrote:

On 10/23/24 20:56, ToddAndMargo via users wrote:

Hi All,

$ rpm -qa kernel
kernel-6.5.10-200.fc38.x86_64
kernel-6.11.3-100.fc39.x86_64
kernel-6.11.4-201.fc40.x86_64

Problem, only the 38 kernel shows in grub.

How do I get the 40 kernel to show in grub?

Yours in confusion,
-T

This may be the issue:

# mount | grep "/boot "
/dev/nvme0n1p2 on /boot type ext4 (rw,relatime,seclabel)

# grub2-install  /dev/nvme0n1
Installing for x86_64-efi platform.

Make sure Secure Boot is disabled before proceeding.

grub2-install: error: This utility should not be used for EFI platforms because it does not support UEFI Secure Boot. If you really wish to proceed, invoke the --force option.

These days when kernels are installed Fedora runs grubby to build the Grub boot menus. I've never liked the format of those menus so being UEFI rather than legacy bios I always manually run sudo grub2-mkconfig -o /boot/grub2/grub.cfg. Grub2-install is never used on uefi systems it is only ever used on legacy bios systems. Check /boot/efi/EFI/fedora, there should be a grub.cfg there that loads /boot/grub2/grub.cfg which will then load the grub menus at boot, that menu should then have all kernels installed. Also check /etc/default/grub, that file should have a line in it to supply the kernel options to be used at boot which should contain the options to blacklist nouveau if you are using nvidia drivers.

regards,
Steve

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