Re: [gentoo-user] Syntax to upgrade kernel

[Stephen Liu]

Hi mathieu,

Thanks for your detail advice.  I have following points expected to be 
advised.

- snip -
Kindly advise what will be the correct command line to upgrade kernel
from Gentoo website to retain old kernel.  So there will be 2 kernels at
boot for selection.  I use Grub.
   

1. emerge the new kernel, configure and build:
# emerge gentoo-sources
# cd /usr/src
# rm -f linux
# ln -s linux-2.4.20-gentoo-r8 linux
# cp linux-2.4.20-gentoo-r7/.config linux
 

Is it ".config" a hidden file under "linux-2.4.20-gentoo-r7/"

# cd linux
# make oldconfig
... answer questions if any ...
# make clean dep
# make bzImage modules
# make modules_install
# cp arch/i386/boot/bzImage /boot/vmlinuz-2.4.20-gentoo-r8
 

I suppose "arch/i386/boot/bzImage" will be created after "make 
modules_install"

2. optinal: if you use alsa-driver
# cd /lib/modules
# touch 2.4.20-gentoo-r7/kernel/sound
(should be enough to protect r7's alsa modules, but it would be better to 
backup them)
# emerge alsa-driver
 

I have not installed "alsa-driver" yet.  Gentoo 1.4 is without sound.  
At time of installing Gentoo1.4 I installed "emerge emu10k1" because the 
box has a "Creative Sound Blaster Live" sound card.  The installation 
was interrupted unexpectedly.  I posted for assistance on this List and 
I was advised that I should install "alsa-driver".  Therefore I just 
left it there incomplete.  Now at boot the OS can't detect the sound module

I tried to find the bootlog to show it here but could not find it under 
/var/log/

3. optional: if you use nvidia-kernel
# cd /lib/modules
# touch 2.4.20-gentoo-r7/video/nvidia.o
(should be enough to protect r7's nvidia modules, but it would be better to
# emerge nvidia-kernel
 

What is nvidia-kernel?

4. adda menu in grub.conf to handle the new kernel: copy and paste the lines 
for your other kernel and change whatever is needed.
 

What shall I add to /boot/grub/grub.conf
default 0
timeout 30
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
title=Gentoo Linux (genkernel)
root (hd0,0)
kernel (hd0,0)/boot/kernel-2.4.20-gentoo-r7 root=/dev/hde3 hdd=ide-scsi
initrd (hd0,0)/boot/initrd-2.4.20-gentoo-r7
Thanks in advance.

B.R.
Stephen
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