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Re: Retaining Older Kernels After Image Update



 Hi.

On Wed, Aug 06, 2014 at 10:06:46AM +0200, Pascal Hambourg wrote:
> Marc Auslander a écrit :
> > Andrei POPESCU <andreimpopescu@gmail.com> writes:
> > 
> >> On Sb, 02 aug 14, 12:11:43, Kenneth Jacker wrote:
> >>> [ Wheezy;  3.2.0-4-amd64 ]
> >>>
> >>> I've noticed that when I upgrade a kernel image, the prior one appears
> >>> to be removed.  So, at any time there is only one kernel image in /boot.
> > 
> > I just manually copy the four files in /boot associated with the
> > working kernel.  I append -knowngood to get new names.  update grup
> > happily makes boot entries for them.
> 
> What about the kernel directory in /lib/modules which contains the major
> part of the kernel ?

Kernel modules that are needed for the boot process itself reside in the
initrd, and he copies that.

Kernel modules that live in /lib/modules are loaded after root
filesystem is mounted and init is started. As long as kernel's ABI isn't
changed they should load successfully.

Reco


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