removing an Installed Kernel

removing an Installed Kernel

[Arun M Kumar]

I have compiled and installed a kernel,

Now it fails to Load...and i want to remove it....

what is the procedure to be followed, I have installed GRUB 1 on my 
system fr simplicity during this process.

removing an Installed Kernel

[Alexandru Juncu]

On 30 August 2013 08:11, Arun M Kumar <arunkr.linux@gmail.com> wrote:
> I have compiled and installed a kernel,
>
> Now it fails to Load...and i want to remove it....
>
> what is the procedure to be followed, I have installed GRUB 1 on my
> system fr simplicity during this process.



Hello.

Just delete the kernel image and the initrd files from /boot and
delele the entry in /boot/grub/menu.lst (in the entry you can find the
file names).

In grub2, you would just delete the image and do an "update-grub2"

removing an Installed Kernel

[Andreas Platschek]

On 08/30/2013 08:49 AM, Alexandru Juncu wrote:
> On 30 August 2013 08:11, Arun M Kumar <arunkr.linux@gmail.com> wrote:
>> I have compiled and installed a kernel,
>>
>> Now it fails to Load...and i want to remove it....
>>
>> what is the procedure to be followed, I have installed GRUB 1 on my
>> system fr simplicity during this process.
>
>
> Hello.
>
> Just delete the kernel image and the initrd files from /boot and
> delele the entry in /boot/grub/menu.lst (in the entry you can find the
> file names).
>
> In grub2, you would just delete the image and do an "update-grub2"
and remove the modules that you install with make modules_install from 
/lib/modules/<kernel_version>

but take care to not remove the wrong directory!

For the future it may be advisable to use a build-script that builds you 
a package that can be installed using your distributions packaging 
system. In example for a Debian based (apt) system you can use
make-kpkg and in addition of getting a kernel image and modules you get 
a package that can be installed and removed using apt (I am sure that 
there is a comparable tool for any other major distribution as well), so 
your workflow looks like this:

make menuconfig
CONCURRENCY_LEVEL=8 make-kpkg --initrd kernel_image
dpkg -i ../linux-image-<version>_<arch>.deb

this even adds an entry to the boot-loader for you.
and then you can just as easy remove the kernel using:

dpkg -r linux-image-<version>

and the kernel is cleanly removed from your system.

regards,
andi






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