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John Dangler wrote: |
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> I changed some options to the menuconfig (trying to get that splash |
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> to work), and saved the changes to an alternate config file. |
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> I'd like to make a kernel with _that_ config file and keep it |
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> separate from my default 2.6-r12 kernel, since, when the splash |
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> causes the panic, I have some way to get back in. |
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> |
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> How do I compile a new kernel that I can add to the grub.conf with |
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> the alternate config ? |
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|
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Just copy it in /boot with a different name, and add an entry in |
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grub.conf for that. For future reference, I also always save the |
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config files in a dedicated directory. |
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Example (with a lot of fantasy, I name kernels using their version |
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number, but that's of course just personal preference): |
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|
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# ls /boot |
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2.6.11.11 Sytem.map-2.6.11.11 |
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This is where I save the configs (again, you might want to do it |
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differently): |
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|
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# ls /root/conf |
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2.6.11.11.conf |
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|
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Relevant section of grub.conf: |
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title 2.6.11.11 |
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root (hd-whatever,n) |
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kernel (hd-whatever,m)/2.6.11.11 root=/dev/hda3 |
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|
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Now suppose I want to do some tests with new features, so this is what |
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I do: |
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|
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# cd /usr/src/linux |
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# make mrproper (I think this is not strictly required, I usually |
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do it) |
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# make menuconfig |
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(load the config file from /root/conf/2.6.11.11.conf, adjust what you |
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want to change, and save the config back to /root/conf but with a |
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different name to preserve the old one, |
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e.g. /root/conf/2.6.11.11-newfeatures.conf |
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|
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Optionally you may also want to append an EXTRAVERSION to the kernel |
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version - something that will show up when you do "uname -a" - IIRC |
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there's now a dedicated menuconfig entry to do this, otherwise you |
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can just edit the Makefile after menuconfig) |
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|
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# make && make modules_install |
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# cp arch/i386/boot/bzImage /boot/2.6.11.11-newfeatures |
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(Optional, but I usually do this, expecially if I set the |
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extraversion) |
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# cp System.map /boot/System.map-2.6.11.11-newfeatures |
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|
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Edit grub.conf, and add a line like this after the existing one: |
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|
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title 2.6.11.11-newfeatures |
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root (hd-whatever,n) |
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kernel (hd-whatever,m)/2.6.11.11-newfeatures root=/dev/hda3 |
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Reboot and you'll see both entries in the grub boot menu. |
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|
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Hope this helps. |
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-- |
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