Difference between revisions of "Gentoo kernel upgrade guide"

Latest revision as of 16:19, 18 December 2016

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;