How to remove hidden kernel

Support
1

Unable to attach screenshot, so attaching the link with space, remove the space “ibb .co/C9Zs1ZY”,
My boot page is showing 3 different kernels (5.10, 5.4), along with another kernel called “stable” which is 5.7 version (i remember installing it using a tar file provided here last year to fix some ideapad freeze issues)

Even if i boot to the 5.10 kernel, on reboot its going back to the 5.7 kernel
my grub is already set to remember the last option “GRUB_DEFAULT=saved”

and i can’t find it in the installed kernel list

    ~  mhwd-kernel -li                                                                                                                                                                 ✔ 
Currently running: 5.10.68-1-MANJARO (linux510)
The following kernels are installed in your system:
   * linux510
   * linux54

Please help me get rid of it

2

You might have to manually delete the 5.7 files under /boot, as well as the modules (entire directory) that refers to 5.7 kernel under /lib/modules

Make sure to run sudo update-grub after you remove the files/directories.

3 
    ~  ls /lib/modules                                                                                                                                                                 ✔ 
5.10.2-2-MANJARO  5.10.63-1-MANJARO  5.10.68-1-MANJARO  5.4.144-1-MANJARO  5.4.148-1-MANJARO  extramodules-5.10-MANJARO  extramodules-5.4-MANJARO
    ~  ls /boot                                                                                                                                                                        ✔ 
amd-ucode.img  initramfs-5.10-x86_64-fallback.img  initramfs-5.4-x86_64.img             intel-ucode.img           linux54-x86_64.kver  vmlinuz-5.4-x86_64
efi            initramfs-5.10-x86_64.img           initramfs-linux-stable-fallback.img  linux510-x86_64.kver      memtest86+           vmlinuz-linux-stable
grub           initramfs-5.4-x86_64-fallback.img   initramfs-linux-stable.img           linux510-x86_64.kver.old  vmlinuz-5.10-x86_64
    ~                                                                                                                                                                                  ✔

I can see some with the name stable in /boot, but nothing under /lib/modules

4

Delete the -stable kernels and initramfs files under /boot

What are the contents of

ls -1 /lib/modules/
5 
    ~  ls -l /lib/modules                                                                                                                                                              ✔ 
total 0
drwxr-xr-x 1 root root 660 Jan 22  2021 5.10.2-2-MANJARO
drwxr-xr-x 1 root root  12 Sep 29 00:40 5.10.63-1-MANJARO
drwxr-xr-x 1 root root 524 Oct  8 13:36 5.10.68-1-MANJARO
drwxr-xr-x 1 root root  12 Sep 29 00:40 5.4.144-1-MANJARO
drwxr-xr-x 1 root root 524 Oct  8 13:36 5.4.148-1-MANJARO
drwxr-xr-x 1 root root  36 Sep 29 00:40 extramodules-5.10-MANJARO
drwxr-xr-x 1 root root  14 Sep 29 00:40 extramodules-5.4-MANJARO
6

Then you only need to delete the -stable kernel and initramfs files located under /boot, then run sudo update-grub.

These are the files I can spot:

initramfs-linux-stable-fallback.img
initramfs-linux-stable.img
vmlinuz-linux-stable
7

Cool, that worked :slight_smile: thanks