Re: [gentoo-user] Syntax to upgrade kernel

[Stephen Liu]

Hi mathieu,

Thanks for your advice.

- snip -
 

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/"
   

yes. it's created by make menuconfig (or config / oldconfig / config).
I've never understood why it's hidden, I would have called it kernel.config.
There is also a "live" version that you can find in /proc/config but maybe 
you've got to compile something in kernel (or it's only for 2.6, I don't 
remember)

 

Noted with thanks

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/
   

follow the gentoo doc to install alsa-driver, it's easy and clear, as ever ;-)
 

OK I will search this doc.

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
   

Sorry, I'm a lilo-user. When I try to install grub, I get stuck in the 
post-bios-boot-thingy (before bootloader gets loaded) with a blinking cursor 
at bottom of screen.

but, I would do the following.

title=Gentoo Linux (genkernel)
root (hd0,0)
kernel (hd0,0)/boot/kernel-2.4.20-gentoo-r8 root=/dev/hde3 hdd=ide-scsi
initrd (hd0,0)/boot/initrd-2.4.20-gentoo-r8
or in vi
/Gentoo4yy3jpf(Cgentoo-r9<esc>2j^Aj^A:wq
;-)
Sorry, I am not very clear.  It seems having only one kernel there, the 
new kernel.  How can I select the old kernel if something going wrong.  
I expect clarifying it before start.

Any folk on the List can shed me some light.

Thanks in advance.

B.R.
Stephen
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