initramfs.Today, I just came into the kernel panic issue while booting up my Ubuntu OS. Below is the error message:
Root Cause#
The kernel panic issue is due to missing of initramfs for the kernel version.
This issue will occur when the kernel can’t mount the rootfs.
There are 2 common causes which causing kernel panic issue.
First, the OS has been configured incorrectly during OS patching and upgrade.
To resolve this, we have to re-generate the initramfs and install it manually.
Another root cause for this issue is, the system has run out of storage space (/boot) and kernel updates had not completed successfully.
To resolve this, we have to do some clean up at the partition by removing old stuffs.
Quick Resolution#
Here’s how I resolve the problem.
First, I reboot my system with previous installed kernel (6.11.0-29).
Then, check the kernel version that I’ve installed earlier.
% dpkg --list | grep linux-image-generic
ii linux-image-generic-hwe-24.04 6.14.0-24.24~24.04.3 amd64 Generic Linux kernel image
The output shows that the kernel version is 6.14.0-24-generic.
And below is what I need to do.
% sudo update-initramfs -u -k 6.14.0-24-generic
% sudo update-grub
% sudo systemctl reboot