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Thread: Cannot boot Ubuntu 12.04.1 LTS

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  1. #1
    Join Date
    Oct 2012

    Cannot boot Ubuntu 12.04.1 LTS

    Hello every one,

    I am having troubles with starting my Ubuntu 12.04.1 LTS being installed along Vista as Vista boots automatically without giving the boot options. You probably saw many other similar problems but I just cant fix it by myself because every case is very different and its solutions do not fully apply to the one I have.

    Here is the information I gathered for ya:

    Boot Info Script log file: (boot-repair has been executed as well).

    This is what gksu gedit /etc/fstab says:
    overlayfs / overlayfs rw 0 0
    tmpfs /tmp tmpfs nosuid,nodev 0 0

    sudo fdisk -l
    Disk /dev/sda: 320.1 GB, 320072933376 bytes
    255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x1c4c4b75

    Device Boot Start End Blocks Id System
    /dev/sda1 2048 3074047 1536000 27 Hidden NTFS WinRE
    /dev/sda2 * 3074048 316418047 156672000 7 HPFS/NTFS/exFAT
    /dev/sda3 316418048 550567919 117074936 7 HPFS/NTFS/exFAT
    /dev/sda4 550567934 625139711 37285889 f W95 Ext'd (LBA)
    /dev/sda5 558958592 625139711 33090560 83 Linux
    /dev/sda6 550567936 558958591 4195328 82 Linux swap / Solaris
    I think the problem might be the unmounted /dev/sda5 partition so I made a screenshot of GParted:

    As you may have noticed, I'm completely new to Linux.

    Thanks in advance!!

  2. #2
    Join Date
    Nov 2009
    Mataro, Spain
    Ubuntu 14.04 Trusty Tahr

    Re: Cannot boot Ubuntu 12.04.1 LTS

    In live mode the partition is unmounted by default, nothing strange there.

    The bootinfo results look fine, can you tell us what exactly is happening when you try to boot now?

    Grub2 is on the MBR as it should be, and the config files are good.

    Do you get the grub2 boot menu at start?
    If yes, what exactly is happening when you try to boot ubuntu, and when you try to boot vista?
    Ubuntu 14.04 LTS 64bit & Windows 10 Pro 64bit

  3. #3
    Join Date
    Oct 2012

    Re: Cannot boot Ubuntu 12.04.1 LTS

    Well, looks like boot-repair did the trick. I just rebooted and noticed the grub2 menu appears now. However, in the beginning I could start Ubuntu only by inserting the Live CD - otherwise Vista started normally as if there was no Ubuntu at all (--> no grub). Anyway, I'm still glad to hear that I did everything right during the installation. Thanks.


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