On 10/03/16 01:56, Rich Freeman wrote: > On Wed, Mar 9, 2016 at 12:41 PM, hw <h...@gc-24.de> wrote: >> >> I'm stuck with 'Could not find the root block device >> in UUID= ...' when trying to boot the guest. >> >> Is grub2 unable to work with virtio devices? >> > > Are you sure that is a grub2 message? It seems more likely that this > is a message from the kernel (unless it is referring to the grub2 root > - posting the entire error would probably help here, and I didn't > realize grub2 even can find its root with a UUID assuming it actually > can). Does your kernel have virtio support enabled? What initramfs > are you using? The problem could lie with either. See if you can get > the initramfs to give you a shell (usually this can be done with a > kernel command line option) and see what block devices it can see (run > blkid or such). > > If you're not using an initramfs then that is your problem. You can't > use UUID to reference your root if you aren't using an initramfs. >
I had to use this on grub install: grub2-install --target=i386-pc /dev/vda && \ grub2-mkconfig -o /boot/grub/grub.cfg It couldn't find the right module without the hint. BillK
