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Thread: Dual-boot failure on upgrade; testdisk clarification

  1. #1
    Join Date
    May 2010
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    5

    Dual-boot failure on upgrade; testdisk clarification

    I have what is becoming a common problem. From a peaceful, existing dual-boot setup (XP and Ubuntu on separate disks) I upgraded from 9.10 to 10.4 and now cannot boot XP.

    OK, for a week I have been trying solutions, but I am definitely a noob.

    Following advice from other threads, I got to screen 3 of TestDisk, only to meet:

    TestDisk 6.11, Data Recovery Utility, April 2009
    Christophe GRENIER <grenier@cgsecurity.org>
    http://www.cgsecurity.org

    Disk /dev/sda - 320 GB / 298 GiB - ATA ST3320613AS

    Hidden sectors are present.

    size 625142448 sectors
    user_max 625142448 sectors
    native_max 4385456 sectors
    dco 625142448 sectors
    Device Configuration Overlay (DCO) present.


    [ Continue ] Continue even if there are hidden data
    - which is not the way they said it would be.

    Can anyone tell me what's happening and how I might respond?

    What other information is needed?

    Thanks in advance.

  2. #2
    Join Date
    May 2010
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    honolulu
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    Distro
    Ubuntu

    Re: Dual-boot failure on upgrade; testdisk clarification

    I have that same screen too... The only option was to continue. Still no luck getting my Windows 7 to boot back up

  3. #3
    Join Date
    Jun 2009
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    2

    Re: Dual-boot failure on upgrade; testdisk clarification

    I got that screen too.
    I just pressed continue, continued as normal and everything worked fine XD

    This is the steps I used (in order):
    [No Log]
    selected /dev/sda (my windows partition is on HD0) [Proceed]
    [Continue]
    [Intel]
    [Advanced]
    selected Partition 3 (with the * next to it, this is where my MBR is kept) [BackupBS]
    Type "Y"
    then press q until testdisk exits

    then run "sudo update-grub"
    Hope this helps!

  4. #4
    Join Date
    May 2010
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    5

    Re: Dual-boot failure on upgrade; testdisk clarification

    When you say:

    then run "sudo update-grub"
    - does that mean that, after restoring from the backup XP boot sector, you were then able to boot into Ubuntu or did you run sudo at the Grub screen (i.e. was Grub still working)?

    I have hesitated to complete the TestDisk procedure for fear of losing Ubuntu too, despite some great feedback from Christophe GRENIER (below).

    > I think Grub has overwritten something on my "Windows disk" (in a
    > dual-boot setup): why am I getting a DCO report?

    The boot sector of your NTFS partition may be damaged.
    In Advanced, select the NTFS partition, choose Boot, BackupBS, confirm,
    Quit and reboot

    Sometimes the report about DCO was erronous with previous previous.
    Can you try using TestDisk 6.12-WIP ?
    wget -N http://www.cgsecurity.org/testdisk-6...inux26.tar.bz2
    tar xjf testdisk-6.12-WIP.linux26.tar.bz2
    cd testdisk-6.12-WIP
    sudo ./testdisk_static

  5. #5
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    Nux Jam
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    Ubuntu Development Release

    Re: Dual-boot failure on upgrade; testdisk clarification


  6. #6
    Join Date
    May 2010
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    5

    Re: Dual-boot failure on upgrade; testdisk clarification

    Sorry, I just don't understand how this is an answer to my question. When I restore the XP boot sector using TestDisk, I assume I'm going to be able to boot into XP OK, but will my existing Grub installation still work?

  7. #7
    Join Date
    Nov 2009
    Location
    Mataro, Spain
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    13,988
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Dual-boot failure on upgrade; testdisk clarification

    Quote Originally Posted by Peter Lenny View Post
    Sorry, I just don't understand how this is an answer to my question. When I restore the XP boot sector using TestDisk, I assume I'm going to be able to boot into XP OK, but will my existing Grub installation still work?
    Yes, don't worry, grub will still work. Dino just loves that mini how-to which basically tells you how to install ubuntu from scratch but has nothing to do with your problem. So he keeps posting it around. And confusing people.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 14.04 LTS 64bit & Windows 10 Pro 64bit

  8. #8
    Join Date
    May 2010
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    5

    Thumbs down Re: Dual-boot failure on upgrade; testdisk clarification

    Finally screwed up courage, ignored the DCO issue and my incomplete data backup, followed Christophe's instructions and it worked just fine!
    Seems to have left Ubuntu with a few hiccups, but nothing that a reboot doesn't cure.
    Thanks to all involved.
    Last edited by Peter Lenny; May 24th, 2010 at 08:42 PM. Reason: Tried to remove the unintended smilie from the start of the message.

  9. #9
    Join Date
    Jul 2010
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    2

    Re: Dual-boot failure on upgrade; testdisk clarification

    Hey guys, having the exact same issue, i stumbled upon this thread after searching.

    Rather than beat a dead horse, i'll just use his description.

    Anyways, same issue, only after trying this with testdisk, and updating grub, the same issue happens.

    After referring to http://sourceforge.net/apps/mediawik...ms:Boot_Sector

    I tried running my Windows 7 startup disk, and attempting to use the repair option, It says it isn't the correct disk. Lmao? It's the only i used to install windows 7.

    Maybe my issues go deeper, and point to a bad sector?

    Any help appreciated.
    Thanks

  10. #10
    Join Date
    Jun 2009
    Location
    SW Forida
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    Hidden!
    Distro
    Ubuntu

    Re: Dual-boot failure on upgrade; testdisk clarification

    Post this:

    Boot Info Script courtesy of forum member meierfra
    Page with instructions and download:
    http://bootinfoscript.sourceforge.net/
    Paste results.txt, then highlight entire file and click on # in edit panel(code tags) to make it easier to read.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

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