View source for Gentoo kernel upgrade guide


== manual kernel upgrade using make oldconfig ==

  cd /usr/src/linux
  ls -l .config
  eselect kernel set 3
  cp -a .config /usr/src/linux/
  cd /usr/src/linux
  make oldconfig
  make && make modules_install
  ls -l /boot/
  cp -a arch/x86/boot/bzImage /boot/kernel-`ls -l /usr/src/linux |awk -F "> " '{print $2}'`
  rm /boot/vmlinuz.old
  oldkern=`ls -l /boot/vmlinuz | awk '{ print $NF }'`; ln -s $oldkern /boot/vmlinuz.old
  rm /boot/vmlinuz
  newkern=/boot/kernel-`ls -l /usr/src/linux |awk -F "> " '{print $2}'`; ln -s $newkern /boot/vmlinuz
  reboot

== genkernel upgrade commands ==

 linux # eselect kernel list
 linux # eselect kernel set ''number''
 linux # cd /usr/src/linux
 linux # cp -a /etc/kernels/kernel-config-x86_64-3.0.6-gentoo .config
 linux # make oldconfig
 linux # cp -a .config /etc/kernels/kernel-config-x86_64-3.1.6-gentoo
 linux # cp /boot/grub/grub.conf /boot/grub/grub.conf.bak
 linux # genkernel --bootloader=grub all
       #  genkernel --no-clean --lvm --luks all


Error:
* No current 'title' entries found in your grub.conf...skipping update

 linux #  ls -l /boot/

 rm initramfs.old 
 rm vmlinuz
 ln -s kernel-genkernel-x86_64-3.0.6-gentoo vmlinuz.old
 ln -s initramfs-genkernel-x86_64-3.0.6-gentoo initramfs.old
 ln -s kernel-genkernel-x86_64-3.1.6-gentoo vmlinuz
 ln -s kernel-genkernel-x86_64-3.1.6-gentoo vmlinuz
 vi /boot/grub/menu.lst

get current kernel symlink
 ls -l /usr/src/ | grep lrw | awk '{print $11}'

== Loading kernel modules on boot ==
configure /etc/conf.d/modules file (base layout 2)
example loading of e1000 NIC driver module:
 modules="e1000"


== eselect script ==

 cd /usr/src/linux; eselect kernel list; printf "select newest kernel version:"; read KERNEL_SET; export KERNEL_SET; echo "your choice = $KERNEL_SET"; eselect kernel set $KERNEL_SET; echo "current kernel symlink is(denoted by asterik)..."; eselect kernel list;

[[category:linux]]