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<title>The Linux Kernel HOWTO
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<author>Brian Ward, <tt>bri@cs.uchicago.edu</tt>
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<date>v1.0, 5 June 1999
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<date>v2.0, 03 Jan 2001
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<abstract>
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This is a detailed guide to kernel configuration, compilation, upgrades,
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@ -77,7 +77,143 @@ it outside the quotation marks in such cases. In other words, when
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indicating that you should type ``<tt>make config</tt>'' I would write
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`<tt>make config</tt>', not `<tt>make config</tt>.'
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<p>
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<!--
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*******************************************
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************ End of Section ***************
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*******************************************
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<chapt change> Quick Install Steps
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-->
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<sect> Quick Steps - Kernel Compile
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<p>
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This section is written by
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<htmlurl url="mailto:alavoor@yahoo.com"
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name="Al Dev">
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The latest version of this section is at <url url="http://www.aldev.8m.com"> and click on "
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<url name="Quick Steps to recompile linux kernel" url="http://www.aldev.8m.com/kernelcompile.html">
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". Mirror site is at <url url="http://aldev.webjump.com">.
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A copy of the above web-site is reproduced here -
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Kernel re-compile is required in order to make the kernel very lean
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and which will result in FASTER operating system . It is also
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required to support any new devices.
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<enum>
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<item> Login in as 'root' throughout all these steps. Mount Redhat linux cdrom and install the linux kernel source rpm
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<code>
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cd /mnt/cdrom/RedHat/RPMS
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rpm -i kernel-headers*.rpm
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rpm -i kernel-sources*.rpm
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rpm -i bin86*.rpm
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</code>
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(This is required only for OLDER Linux systems like redhat 5.x.
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Install the Intel assembler 'as86' command. Get from
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<url url="http://rpmfind.net/linux/RPM/mandrake/7.1/Mandrake/RPMS/bin86-0.4-12mdk.i586.html">)
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or at <url url="http://rpmfind.net/linux/RPM/kondara/jirai/i586/bin86-0.4-8k.i586.html">
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<item> Start X-windows with 'startx'.
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<code>
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cd /usr/src/linux
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make xconfig
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</code>
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The <bf>"make xconfig"</bf> brings up a user friendly GUI interface! DO NOT
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use 'make config' which is a command-line option (
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use this only if you CANNOT bring up X-window). You load
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the configuration file from <it>/usr/src/linux/arch/i386/config.in </it>
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<item> Enable the Loadable kernel modules support! See these man pages
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man lsmod; man insmod; man rmmod; man depmod;
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With this option you can load/unload the device drivers
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dynamically on running linux system on the fly.
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<item> Save and Exit "make xconfig". And now, do -
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<code>
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make dep
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make clean
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</code>
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<item> Read the following file (to gain some knowledge about kernel building...) -
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<code>
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man less
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less /usr/src/linux/arch/i386/config.in
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</code>
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Type 'h' for help and to navigate press i, j, k, l, h or arrow, page up/down keys.
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<item> Now, give the make command -
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<code>
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cd /usr/src/linux
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man nohup
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nohup make bzImage &
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tail nohup.out (.... to monitor the progress)
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This will put the kernel in /usr/src/linux/arch/i386/boot/bzImage
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man tail
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</code>
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<item> After bzImage is successful, copy the kernel image to /boot directory -
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<code>
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cp /usr/src/linux/arch/i386/boot/bzImage /boot/bzImage.myker
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</code>
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You must copy the new kernel image to /boot directory, otherwise the new kernel may not boot. And then read the manual page on lilo -
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<code>
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man lilo; man lilo.conf;
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And edit /etc/lilo.conf file and put these lines -
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image=/boot/bzImage.myker
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label=myker
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root=/dev/hda1
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read-only
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You can check device name for 'root=' with the command -
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df /boot
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</code>
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<item> Now give
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<code>
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lilo ;
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lilo -q ;
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</code>
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You must re-run lilo even if entry 'myker' exists, everytime you create a new bzImage.
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<item> Reboot the machine and at lilo press tab key and
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type 'myker' If it boots then you did a good job! Otherwise at lilo
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select your old kernel, boot and re-try all over again. Your old kernel
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is still intact at say '/boot/vmlinuz-2.0.34-0.6'
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<item> Loadable Modules: Boot new kernel and install the loadable modules from RedHat Linux cdrom
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<code>
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rpm -i /mnt/cdrom/contrib/kernel-modules*.rpm ....(For old linux systems which do not have
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insmod pre-installed)
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man insmod
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insmod
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</code>
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<item> If your linux is already had loadable module enabled, then check
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for files in /lib/modules. The step given below may not be
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needed. Build modules by installing kernel-source*.rpm and kernel-headers*.rpm.
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<code>
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cd /usr/src/linux
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make modules
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make install_modules
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</code>
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<item> Since the new kernel 'myker' boots, you can create the boot disk. Insert a blank floppy into floppy drive and -
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<code>
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cd /usr/src/linux
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make bzdisk
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</code>
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</enum>
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<!--
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*******************************************
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************ End of Section ***************
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*******************************************
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-->
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<sect>Important questions and their answers <p>
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<sect1>What does the kernel do, anyway? <p>
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