Re: How to install new kernels in grub?

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On 10/27/24 08:24, Steve Forsythe wrote:
On 10/27/24 3:23 AM, ToddAndMargo via users wrote:
On 10/25/24 03:31, 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.
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.
Make sure Secure Boot is disabled before proceeding.



After a full clone, I tried

    # grub2-install  /dev/nvme0n1 --force

It installed and said successful.

But ... no change to grub at boot.

<editorial comment> AAAAAHHHHHHHH!!!! </editorial comment>


This sounds very similar to an issue that I ran into when upgrading from 38 to 39 - newer kernels were getting installed but the system continued to boot the 38 kernel. Check out https://forums.fedoraforum.org/ showthread.php?331462-dnf-system-upgrade-Fedora-38-to-39-latest-kernel- missing-from-grub-menu/page2 especially post #24 from JEltonM. Worked for me.

HTH

Steve

Hi Steve,

here aer the steps in teh link you sent:

1) boot using the latest installed kernel (in my case: kernel-6.5.10-100.fc37.x86_64) 2) Uninstall the failed kernel packages (kernel-6.5.11-300.fc39.x86_64 et al. for me). 3) cd /boot/efi and locate the machine id directory (i.e.: b4bf0711a.....9614). Rename it by appending .save to its name (for security). 4) dnf update. This will reinstall the f39 kernel, but without failure this time. 5) Reboot: you should now see the f39 kernel in the grub menu --> start with it. 6) Do what you want with the saved directory when you're sure its contents is not needed anymore.


I do not understand what is meant in step 3: "locate the
id directory":

# ls -al /boot/efi
total 36
drwx------.  5 root root 16384 Dec 31  1969 .
dr-xr-xr-x.  9 root root  4096 Oct 25 04:35 ..
drwx------. 12 root root  4096 Oct 25 04:35 25f870556c344b599c639eb386296fa2
drwx------.  4 root root  4096 Jul 18  2023 EFI
-rwx------.  1 root root    34 Jul 19  2023 mach_kernel
drwx------.  3 root root  4096 Jul 19  2023 System

Is it the big long 25f... directory?

-T




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