News Group Posts

Installing Linux kernel

From: Andy Longton <fake_see_organization@header.org>
Subject: Re: Installing a new kernel -> follow-up
Newsgroups: linux.redhat.install,linux.redhat.misc,linux.redhat
References: <3820D26F.6C6C4452@videotron.ca> 
Date: Wed, 3 Nov 1999 22:27:35 -0400
Message-ID: <7fuqv7.ed.ln@localhost.localdomain> 

In linux.redhat.install J.F. Gratton <jiefg@videotron.ca> wrote:
: Hello there :)

: I managed to compile the new kernel (no big deal actually !).

: The documentation is a bit sketchy... I wanted to be able to keep my old
: 2.2.12-20 as well as the new 2.2.13.

: I went into LILO, created a new entry for the 2.2.13 kernel, but here's
: the catch, here's the entry for my old kernel:

: image=/boot/vmlinuz
:     label=old
:     initrd=/boot/initrd-2.2.12-20.img
:     read-only
:     root=/dev/hda8

: Now....what is this initrd, and why isn't there a similar file for my
: new 2.2.13 kernel ?

It's a boot image that temporarily stores modules so that they don't 
need to be dragged off of the boot partition.  Usually for SCSI support,
but I haven't ever had to use it.

As usual, when in doubt, man;

  man initrd

it comes up with a good description on my system.

: Also, in the Kernel HOWTO they only mentionned that you need to copy
: bzImage (renaming it if you want) into /boot... What about System.map ?
: When I rebooted I got plenty of error messages because I don't have a
: new System.map (how do I generate one ??)

System.map is created as a part of the build.  The part of my
kernel_maker.sh script that covers this reads like this;

-------
  cp /usr/src/linux/System.map /boot/System.map-2.2.13
  cd /boot
  rm System.map
  ln -s System.map-2.2.13 System.map
-------

...remember to change the "2.2.13" version # each time you compile a
different kernel.

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