I also upgraded from Maverick to Natty and I'm getting Grub related errors: ---------------------------------------------------------------------------------------------------------- Setting up linux-image-2.6.38-11-generic (2.6.38-11.48) ... Running depmod. update-initramfs: Generating /boot/initrd.img-2.6.38-11-generic Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/dkms 2.6.38-11-generic /boot/vmlinuz-2.6.38-11-generic * dkms: running auto installation service for kernel 2.6.38-11-generic * vboxhost (4.0.4)... [ OK ] * nvidia-current (270.41.06)... [ OK ] run-parts: executing /etc/kernel/postinst.d/initramfs-tools 2.6.38-11-generic /boot/vmlinuz-2.6.38-11-generic run-parts: executing /etc/kernel/postinst.d/nvidia-common 2.6.38-11-generic /boot/vmlinuz-2.6.38-11-generic run-parts: executing /etc/kernel/postinst.d/pm-utils 2.6.38-11-generic /boot/vmlinuz-2.6.38-11-generic run-parts: executing /etc/kernel/postinst.d/update-notifier 2.6.38-11-generic /boot/vmlinuz-2.6.38-11-generic run-parts: executing /etc/kernel/postinst.d/zz-update-grub 2.6.38-11-generic /boot/vmlinuz-2.6.38-11-generic error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). Generating grub.cfg ... error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). /usr/sbin/grub-probe: error: unknown filesystem. run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 1 Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-2.6.38-11-generic.postinst line 1010. dpkg: error processing linux-image-2.6.38-11-generic (--configure): subprocess installed post-installation script returned error exit status 2 Setting up memtest86+ (4.10-1.1ubuntu1) ... error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). Generating grub.cfg ... error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). /usr/sbin/grub-probe: error: unknown filesystem. dpkg: error processing memtest86+ (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of ubuntu-standard: ubuntu-standard depends on memtest86+; however: Package memtest86+ is not configured yet. dpkg: error processing ubuntu-standard (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of linux-image-generic: linux-image-generic depends on linux-image-2.6.38-11-generic; however: Package linux-image-2.6.38-11-generic is not configured yet. dpkg: error processing linux-image-generic (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of linux-generic: linux-generic depends on linux-image-generic (= 2.6.38.11.26); however: Package linux-image-generic is not configured yet. dpkg: error processing linux-generic (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already Setting up grub-pc (1.99~rc1-13ubuntu3) ... error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). Generating grub.cfg ... error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). /usr/sbin/grub-probe: error: unknown filesystem. dpkg: error processing grub-pc (--configure): subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already dpkg: dependency problems prevent configuration of grub-gfxpayload-lists: grub-gfxpayload-lists depends on grub-pc (>= 1.99~20101210-1ubuntu2); however: Package grub-pc is not configured yet. dpkg: error processing grub-gfxpayload-lists (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports is reached already Errors were encountered while processing: linux-image-2.6.38-11-generic memtest86+ ubuntu-standard linux-image-generic linux-generic grub-pc grub-gfxpayload-lists E: Sub-process /usr/bin/dpkg returned an error code (1) ---------------------------------------------------------------------------------------------------------- The are 7 packages left to install/upgrade: --- 7 not fully installed or removed. Conf linux-image-2.6.38-11-generic (2.6.38-11.48 Ubuntu:11.04/natty-updates [amd64]) Conf memtest86+ (4.10-1.1ubuntu1 Ubuntu:11.04/natty [amd64]) Conf ubuntu-standard (1.220 Ubuntu:11.04/natty [amd64]) Conf grub-gfxpayload-lists (0.2 Ubuntu:11.04/natty [amd64]) Conf grub-pc (1.99~rc1-13ubuntu3 Ubuntu:11.04/natty [amd64]) Conf linux-image-generic (2.6.38.11.26 Ubuntu:11.04/natty-updates [amd64]) Conf linux-generic (2.6.38.11.26 Ubuntu:11.04/natty-updates [amd64]) --- The problem appears to be in grub-probe: --- $ sudo grub-probe / error: found two disks with the index 0 for RAID md0. error: superfluous RAID member (2 found). grub-probe: error: unknown filesystem. --- More verbose: --------------------------------------------------------------------------------- $ sudo grub-probe -v / grub-probe: info: cannot open `/boot/grub/device.map'. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: scanning hd0 for LVM. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: the size of hd0 is 976773168. grub-probe: info: scanning hd1 for LVM. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. error: found two disks with the index 0 for RAID md0. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. error: superfluous RAID member (2 found). grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: scanning md0 for LVM. grub-probe: info: no LVM signature found . grub-probe: info: scanning md0,msdos5 for LVM. grub-probe: info: no LVM signature found . grub-probe: info: scanning md0,msdos3 for LVM. grub-probe: info: no LVM signature found . grub-probe: info: scanning md0,msdos2 for LVM. grub-probe: info: no LVM signature found . grub-probe: info: scanning md0,msdos1 for LVM. grub-probe: info: no LVM signature found . grub-probe: info: scanning hd0 for LVM. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: the size of hd0 is 976773168. grub-probe: info: scanning hd0,msdos5 for LVM. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: scanning hd0,msdos3 for LVM. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: scanning hd0,msdos2 for LVM. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: scanning hd0,msdos1 for LVM. grub-probe: info: the size of hd0 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: scanning hd1 for LVM. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: the size of hd1 is 976773168. grub-probe: info: scanning hd1,msdos5 for LVM. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: scanning hd1,msdos3 for LVM. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: scanning hd1,msdos2 for LVM. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: scanning hd1,msdos1 for LVM. grub-probe: info: the size of hd1 is 976773168. grub-probe: info: no LVM signature found . grub-probe: info: changing current directory to /dev. grub-probe: info: changing current directory to snd. grub-probe: info: changing current directory to by-path. grub-probe: info: changing current directory to vboxusb. grub-probe: info: changing current directory to 003. grub-probe: info: changing current directory to cpu. grub-probe: info: changing current directory to shm. grub-probe: info: opening md0. grub-probe: error: unknown filesystem. --------------------------------------------------------------------------------- 'mount' output: --- /dev/md0 on / type ext4 (rw,errors=remount-ro,commit=0) proc on /proc type proc (rw,noexec,nosuid,nodev) none on /sys type sysfs (rw,noexec,nosuid,nodev) fusectl on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) none on /dev type devtmpfs (rw,mode=0755) none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) none on /dev/shm type tmpfs (rw,nosuid,nodev) none on /var/run type tmpfs (rw,nosuid,mode=0755) none on /var/lock type tmpfs (rw,noexec,nosuid,nodev) none on /var/lib/ureadahead/debugfs type debugfs (rw,relatime) gvfs-fuse-daemon on /home/pedro/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=pedro) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) --- 'fdisk -l' output: --- Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000080 Device Boot Start End Blocks Id System /dev/sdb1 1 24 192748+ de Dell Utility /dev/sdb2 * 25 286 2104515 b W95 FAT32 /dev/sdb3 287 772 3903795 82 Linux swap / Solaris /dev/sdb4 773 60802 482182145 5 Extended /dev/sdb5 773 60802 482182144 fd Linux raid autodetect Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000080 Device Boot Start End Blocks Id System /dev/sda1 1 24 192748+ de Dell Utility /dev/sda2 * 25 286 2104515 b W95 FAT32 /dev/sda3 287 772 3903795 82 Linux swap / Solaris /dev/sda4 773 60802 482182145 5 Extended /dev/sda5 773 60802 482182144 fd Linux raid autodetect Disk /dev/md0: 493.8 GB, 493754449920 bytes 2 heads, 4 sectors/track, 120545520 cylinders Units = cylinders of 8 * 512 = 4096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/md0 doesn't contain a valid partition table --- /proc/mdstat: --- $ cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid1 sda5[0] sdb5[1] 482182080 blocks [2/2] [UU] unused devices: --- Current kernel is: Linux 2.6.35-30-generic #56-Ubuntu SMP Mon Jul 11 20:01:08 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux