linux-kernel - Re: Is it needed to reinstall custom kernel every time, after rebuilding?

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Message-ID: <alpine.LNX.2.00.1108190910281.31857@swampdragon.chaosbits.net>
Date:	Fri, 19 Aug 2011 09:11:11 +0200 (CEST)
From:	Jesper Juhl <jj@...osbits.net>
To:	Amirali Shambayati <amirali.shambayati@...il.com>
cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	kernelnewbies@...nelnewbies.org
Subject: Re: Is it needed to reinstall custom kernel every time, after
 rebuilding?

On Thu, 18 Aug 2011, Amirali Shambayati wrote:

> Hi all,
> 
> Last time, I emailed to linux-kernel and kernenewbies mailing-lists
> about how to speed up kernel compilation. I received very useful peace
> of advice about using "ccache". Now I want to modify and compile a
> unique custom kernel several times.
> I used https://help.ubuntu.com/community/Kernel/Compile to compile
> custom kernel. This tutorial uses "kpkg" command to build kernel and
> it produces two .deb files: "linux-image" and "linux-header" as
> result.
> So for the first time I followed this tutorial.
> For next times, according to to experts' advice, I use "make all" in
> custom kernel root directory to rebuild kernel. I am not sure that it
> would be enough to use changed kernel after rebooting. As I asked from
> some experts, It is also required to install kernel again, but they
> were not familiar with "kpkg" and "dbkg",... commands for kernel
> installation.
> Should I use "dbkg" command after every time I rebuild kernel, for
> re-installation?
> If anybody is familiar with these method of kernel installation,
> please help me. It is very urgent, because it is related to my B.S.
> thesis :P
> 

If you build a new kernel and want to run that new kernel, then you must 
install that newly build kernel and reboot to it.

-- 
Jesper Juhl <jj@...osbits.net>       http://www.chaosbits.net/
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