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Thread: Ubuntu Server 12.04 Won't Boot After Install

  1. #1
    Join Date
    Feb 2014
    Beans
    1

    Ubuntu Server 12.04 Won't Boot After Install

    The installation of Ubuntu Server 12.04 on my PC was finished smoothly but when I try to boot it, the following message appears:

    Reboot and select proper boot device...

    This is the output after I run a boot info:

    http://paste.ubuntu.com/6914342/

    And after running the boot info script

    Code:
           Boot Info Script 0.61      [1 April 2012]
        
        
        ============================= Boot Info Summary: ===============================
        
         => No boot loader is installed in the MBR of /dev/sda.
         => No boot loader is installed in the MBR of /dev/sdb.
        
        sda1: __________________________________________________________________________
        
            File system:       linux_raid_member
            Boot sector type:  -
            Boot sector info: 
        
        sda2: __________________________________________________________________________
        
            File system:       ext4
            Boot sector type:  -
            Boot sector info: 
            Operating System:  
            Boot files:        
        
        sdb1: __________________________________________________________________________
        
            File system:       linux_raid_member
            Boot sector type:  -
            Boot sector info: 
        
        sdb2: __________________________________________________________________________
        
            File system:       ext4
            Boot sector type:  -
            Boot sector info: 
            Operating System:  
            Boot files:        
        
        ============================ Drive/Partition Info: =============================
        
        Drive: sda _____________________________________________________________________
        
        Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
        255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
        Units = sectors of 1 * 512 = 512 bytes
        Sector size (logical/physical): 512 bytes / 4096 bytes
        
        Partition  Boot  Start Sector    End Sector  # of Sectors  Id System
        
        /dev/sda1                   1 1,953,525,167 1,953,525,167  ee GPT
        
        
        GUID Partition Table detected.
        
        Partition    Start Sector    End Sector  # of Sectors System
        /dev/sda1           2,048     7,813,119     7,811,072 RAID partition (Linux)
        /dev/sda2       7,813,120 1,953,523,711 1,945,710,592 EFI System partition
        
        Drive: sdb _____________________________________________________________________
        
        Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
        255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
        Units = sectors of 1 * 512 = 512 bytes
        Sector size (logical/physical): 512 bytes / 4096 bytes
        
        Partition  Boot  Start Sector    End Sector  # of Sectors  Id System
        
        /dev/sdb1                   1 1,953,525,167 1,953,525,167  ee GPT
        
        
        GUID Partition Table detected.
        
        Partition    Start Sector    End Sector  # of Sectors System
        /dev/sdb1           2,048     7,813,119     7,811,072 RAID partition (Linux)
        /dev/sdb2       7,813,120 1,953,523,711 1,945,710,592 EFI System partition
        
        "blkid" output: ________________________________________________________________
        
        Device           UUID                                   TYPE       LABEL
        
        /dev/loop0                                              squashfs   
        /dev/sda1        8bcf74b5-7cbd-25a9-31c5-537344fcd5c0   linux_raid_member server:0
        /dev/sda2        80d5941c-88e4-4ffc-bdf4-42cf53dbfee8   ext4       
        /dev/sdb1        8bcf74b5-7cbd-25a9-31c5-537344fcd5c0   linux_raid_member server:0
        /dev/sdb2        677c215a-c736-44e6-a7f3-3026764fc715   ext4       
        /dev/sr0                                                iso9660    Ubuntu 12.04.2 LTS i386
        
        ================================ Mount points: =================================
        
        Device           Mount_Point              Type       Options
        
        /dev/loop0       /rofs                    squashfs   (ro,noatime)
        /dev/sr0         /cdrom                   iso9660    (ro,noatime)
    What should I do?

  2. #2
    Join Date
    Nov 2011
    Location
    /dev/root
    Beans
    Hidden!

    Re: Ubuntu Server 12.04 Won't Boot After Install

    => No boot loader is installed in the MBR of /dev/sda.
    => No boot loader is installed in the MBR of /dev/sdb.
    You have installed the bootloader to the wrong place (or not at all).

    If I understand correctly, you have a RAID system. Unfortunately I know very little about RAID, so I cannot help much, except that you might try to repair the system by installing a bootloader into the head of a device, either /dev/sda or /dev/sdb (no digit).

    See this link https://help.ubuntu.com/community/Grub2/Installing

  3. #3
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Ubuntu Server 12.04 Won't Boot After Install

    I do not know RAID either, but you normally install the boot loader to the root of the RAID not the drive's MBR.

    Is your system UEFI. The boot flag making an ext4 partition as the efi partition may confuse it, as efi partitions are supposed to be FAT32 and only have the efi boot files, but your ext4 looks like your main install.

    While sda1 & sdb1 have same UUID, your sda2 and sdb2 do not. Is your RAID broken, should not both be the same?
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







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