Same problem here (11.04 alternate on Sandy Bridge chipset). /boot/grub/device.map doesn't exist mkdevicemap creates a device.map, which contains the physical hard disks, instead of the md0 creating the device.map by hand (but pointing to the md0 device) and then running the above described update-grub2 && grub-install /dev/sda && grub-install /dev/sdb works without error message. Otherwise update-grub2 fails with "No such device"
Nevertheless, system is not bootable with "no such device <uuid>", ls (hd0,1) gives "unknown filesystem" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/681535 Title: Auto-detection of a filesystem of /dev/md0 failed. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
