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 19:15:02 +0000 To: Steve Turnbull <steve.turnbull@yhgfl.net>
Steve Turnbull escribió:
>On Sunday 30 January 2005 18:57, Pedro M (Morphix User) wrote:
>
>
>>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.
>>
>>
>I just mentioned a good way of compiling a kernel, step by step. How do you
>mean 'Kernel update is so usual'?
>
>
>
A lot of people, do it from time to time (it's very usual ) . I prefer
a single step process (or command).
Regards.
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