Hi. The best way to do this is to put each kernel in its own directory. For example, you can have /boot/stable/ and /boot/test/ (or whatever you feel like calling the dirs). Then each dir will have it's owm image and System.map. In /etc/lilo.conf you could do label=stable image=/boot/stable/vmlinuz root=/dev/hda2 label=test images=/boot/test/vmlinuz root=/dev/hda2 Before you build the kernels be sure to add the appropriate entry to lilo.conf (especially if you do a make zlilo which runs lilo after the build). Also set the INSTALL_PATH in the kernel top-level Makefile to point to where ever the kernel and map are to be installed. I have not tried this myself but I see no reason why is should not work. :) kw /* Keith Warno ** Developer & Sys Admin ** http://www.HaggleWare.com/ */ ----- Original Message ----- From: "Mike Kenzie" To: "Philipp Thomas" ; Cc: Sent: 09 June 2000, Friday 12:05 Subject: Re: [SLE] Two kernels? you mention keeping an extra copy of System.map but I don't see it in the lilo.conf that you included. How do you specify that the system.map is different with each kernel? Can the image= point to a link? ----- Original Message ----- From: Philipp Thomas To: Cc: Sent: Monday, June 05, 2000 10:12 PM Subject: Re: [SLE] Two kernels?

* muskrat@texas.net (muskrat@texas.net) [20000605 17:54]:

...

Is is possible (and straightforward) to keep two versions of the kernel around selecting which to actually boot in LILO?

Yes on both accounts ;-) Just rename one of the kernels (and System.map accordingly) and add an entry in /etc/lilo.conf. Here's what my lilo.conf at home looks like:

image = /boot/vmlinuz-2.4.0-test1-ac7 root = /dev/hda6 append ="video=matrox:1280x1024@75,mtrr,sgram" label = linux # image = /boot/vmlinuz-2.3.99-pre9 root = /dev/hda6 append ="video=matrox:1280x1024@75,mtrr,sgram" label = lxpre9 # image = /boot/vmlinuz-2.3.99-pre8 root = /dev/hda6 append ="video=matrox:1280x1024@75,mtrr,sgram" label = lxpre8 # image = /boot/vmlinuz-2.3.99-pre6 root = /dev/hda6 append ="video=matrox:1280x1024@75,mtrr,sgram" label = lxpre6 # image = /boot/vmlinuz-2.3.99-pre5 root = /dev/hda6 append ="video=matrox:1280x1024@75,mtrr,sgram" label = lxpre5 # image = /boot/vmlinuz-2.3.99-pre3 root = /dev/hda6 append ="mem=192M video=matrox:1280x1024@75,mtrr,sgram" label = lxpre3 # image = /boot/vmlinuz-2.2.14 append ="mem=192m" root = /dev/hda6 label = lx14 #

-- Philipp Thomas Development, SuSE GmbH, Schanzaecker Str. 10, D-90443 Nuremberg, Germany

#define NINODE 50 /* number of in core inodes */ #define NPROC 30 /* max number of processes */ -- Version 7 UNIX fuer PDP 11, /usr/include/sys/param.h

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