On Wed, Nov 25, 2020 at 12:15 PM <the...@sys-concept.com> wrote: > > On 11/25/2020 02:50 AM, Michael wrote: > > On Wednesday, 25 November 2020 06:30:05 GMT the...@sys-concept.com wrote: > > > >> On 11/24/2020 10:08 PM, the...@sys-concept.com wrote: > >>> I'm getting a kernel panic when booting a new system. > >>> > >>> kernel panic - not syncing: VFS: unable to mount root fs on unknown-block > >>> (0,0) > >>> > >>> fstab: > >>> LABEL=boot /boot vfat > > noauto,noatime 1 2 > >>> root=UUID=d32946b3-2236-4998-80dd-68b7d78e0c7b / > > ext4 noatime 0 1 > >>> LABEL=swap none swap > > sw 0 0 > >>> > >>> I even use: emerge --ask sys-kernel/genkernel > >>> genkernel all > >>> > >>> So all the driver are compile-in (nothing should be missing) > >>> > >>> ls -al /boot/vmlinu* /boot/initramfs* > >>> -rwxr-xr-x 1 root root 11221820 Nov 24 21:30 > >>> /boot/initramfs-5.4.72-gentoo-x86_64.img -rwxr-xr-x 1 root root 9036672 > >>> Nov 24 10:56 /boot/vmlinuz-5.4.72-gentoo -rwxr-xr-x 1 root root 8513920 > >>> Nov 24 21:18 /boot/vmlinuz-5.4.72-gentoo-x86_64 > >> This problem is solved, it seems to me I was booting old kernel. > >> Removing old kernel and re-running: > >> grub-mkconfig -o /boot/grub/grub.cfg > >> > >> Solved the problem. > > > > Glad you got your new disk booting. > > > > Worth mentioning your fstab syntax is not entirely correct. According to > > 'man > > fstab' you can specify a device with LABEL=<label>, as long as you have set > > up a filesystem label with e.g. mkfs, or tune2fs. So, your "LABEL=boot" is > > correct. > > > > UUID on the other hand is meant to be specified like so: > > > > UUID=<uuid> > > > > In your case it would be: > > > > UUID=d32946b3-2236-4998-80dd-68b7d78e0c7b > > > > instead of it being preceded by "root=". > > The "genkernel all" is working but I need to find out which option is it > that allow booting the drive. The genkernel.conf is different from > standard kernel .config > > Removing options from genkernel is not easy.
With most initramfs you just pass root=UUID=foo on the kernel command line. In the past genkernel has been quirky - I use dracut and you'd definitely just use root=UUID=foo there. -- Rich
