Re: Kernel Upgrade?
From: Pedro M (Morphix User) (pmacv_at_telefonica.net)
Date: 01/30/05
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Date: Sun, 30 Jan 2005 18:57:38 +0000 To: Steve Turnbull <steve.turnbull@yhgfl.net>
Steve Turnbull escribió:
>On Sunday 30 January 2005 16:18, Max wrote:
>
>
>>Dear All,
>>
>>Is it possible to change the Linux kernel in a Debian installation without
>>having to do a complete reinstall?
>>
>>
>
>You can easily upgrade the kernel without reinstalling the whole operating
>system - a very common thing to do. I don't know what version of Debian you
>are using, but if you do;
>
>apt-get update
>apt-cache search kernel-source
>
>you will get a list of 'debian-ified' kernels. Choose which one you want (if
>your after functionality go for a 2.6.x...) and do
>
>apt-get install kernel-source-2.6.xx
>
>This will install the kernel SOURCE into /usr/src
>
>Install 'quick steps' (as root), make sure you have mkinitrd tools installed,
>and if you want to use your Knoppix config, find it and put it in /tmp. I
>would suggest you don't use this as it compiles modules for all sorts you
>probably don't need. A better solution would be to use the config when you
>first installed Debian, which is in /boot/config-x.xx.xx. Also, this assumes
>a 2.6 kernel;
>
>cd /usr/src
>tar xjvf kernel-source-2.6.xx
>ln -s kernel-source-2.6.xx linux
>cd linux
>
>make mrproper
>cp /boot/config-2.xx.xx .config (or your knoppix one?)
>make menuconfig (add/delete modules etc then save & exit)
>make
>make modules_install
>cd /boot
>cp /usr/src/linux/arch/i386/boot/bzImage linuz-2.6.xx
>cp /usr/src/linuz/System.map System.map-2.6.xx
>
>The 'make modules_install' will place your modules into /lib/modules/2.6.xx
>
>mkinitrd -o initrd.img-2.6.xx 2.6.xx
>
>Note the space before the last '2.6.xx'. This is looking at
>the /lib/modules/2.6.xx dir created earlier
>
>
>Next you need to update your boot manager (I only know grub - if using lilo
>then maybe someone else can help)
>
>edit /boot/grub/menu.lst and add the required fields, something similar to
>this, but every setup maybe different, read up on grub if required;
>
>title Debian GNU/Linux, kernel 2.6.xx
>root (hd0,1)
>kernel /boot/vmlinuz-2.6.xx root=/dev/hda2 ro
>initrd /boot/initrd.img-2.6.xx
>savedefault
>boot
>
>
>Good look
>Steve
>
>
>
>>I have e version ok Knoppix to hand so I'm feeling quite brave. I read a
>>vague report that the kernel is just an ordinary file in some specific
>>location, and it's possible to copy the old kernel to a backup directory
>>for safe keeping, put a new kernel in said specific location, reboot and
>>presto!
>>
>>Finally, is there anything I should be aware of before changing the
>>kernel? The only reason prompting me to change the kernel is that I have
>>a bit of software the documentation of which states that the kernel should
>>be v2.4 or later. For instance, does a change in kernel usually go hand
>>in hand with changing some other part of a system?
>>
>>Regards,
>>--
>>Muggles
>>
>>
>
>
>
A lot of commands. Kernel update is so usual, that would be only a
single command to do it.
Regards.
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