Carlos, I had the same problem as you. I think it works like this (in my case, anyway):
1. Upgrading from Hardy to Lucid doesn't install LVM support--the lvm2 package is not even installed by update-manager. 2. After upgrading ALL packages, resolving many conflicts by hand, getting the new kernel installed, etc, I rebooted and the kernel couldn't find my root partition because it's in an LVM VG, and lvm2 wasn't installed, so there was no lvm in the initramfs. 3. I booted from a Lucid LiveCD, chrooted, installed lvm2. 4. I'm not sure if it was absolutely necessary, but I went ahead and installed grub2 (grub-common, grub-pc packages). 5. The install scripts couldn't find my root partition, because of this symlink problem. Apparently the GRUB from Lucid and the lvm2 from Maverick don't play well together because of the symlinks created by the newer version of lvm2. I went around in circles for a long time. Thanks to some bug reports and forum posts, I was able to get it working by replacing the /dev/mapper symlinks with the device nodes, then reinstalled GRUB (and lvm, just to be sure...all the rebooting and chrooting is vulnerable to typos and human error), and finally all the GRUB and lvm2 scripts worked and I was able to boot into Lucid. Upgrading from Hardy to Lucid is supposed to be supported--shouldn't it work even if users have LVM root partitions? I suppose that fixing the upgrade-manager so it installs lvm2 would fix it, but is it really that simple? How did this situation slip by testing? Are there really that few LVM users? I imagine other people could eventually upgrade from Hardy to Lucid and encounter this problem again. Do we need to file a new bug against update-manager? Here are some links for reference, in case they may help anyone else: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=544577 http://ubuntuforums.org/showthread.php?t=1581099 http://ubuntuforums.org/showthread.php?t=1520447 ** Bug watch added: Debian Bug tracker #544577 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=544577 ** Changed in: grub2 (Ubuntu) Status: Expired => Confirmed ** Tags added: hardy lvm ** Also affects: update-manager Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/591454 Title: grub-probe: cannot find a device for /boot/grub -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
