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Thread: Lost partition: Not detecting

  1. #1
    Join Date
    Nov 2010
    Beans
    1
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Lost partition: Not detecting

    Im running Ubuntu 11.10 from the USB stick.
    I have a 2TB internal HDD which has 2 partitions of 1 TB each.
    Problem is that Ubuntu here is detecting only one of the two partitions.
    I cant see the other partition in Gparted or in the 'Disk Utility' App.
    Its kind of a lost partition which I want to bring back.
    Please help me detect and mount it.
    I hope all the data on other partition is safe.

    Thank you

  2. #2
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Lost partition: Not detecting

    Does gparted show a little yellow or red icon that you can click and see what it says may be wrong with partition?

    Are partitions NTFS and have you run chkdsk from a Windows system or if Linux e2fsck from your Ubuntu install?
    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.







  3. #3
    Join Date
    Sep 2009
    Location
    United Kingdom
    Beans
    84
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Lost partition: Not detecting

    Quote Originally Posted by newbcat View Post
    Im running Ubuntu 11.10 from the USB stick.
    I have a 2TB internal HDD which has 2 partitions of 1 TB each.
    Problem is that Ubuntu here is detecting only one of the two partitions.
    I cant see the other partition in Gparted or in the 'Disk Utility' App.
    Its kind of a lost partition which I want to bring back.
    Please help me detect and mount it.
    I hope all the data on other partition is safe.

    Thank you
    I managed to solve a similar problem using TestDisk. As oldfred says, is your partition ntfs?

    After a power supply interruption to my dual boot laptop, XP and Ubuntu would no longer recognise an extended NTFS partition containing all my precious data files. Initial attempts to recover just led to error messages reporting bad sectors.

    I used the method described here
    http://html5.litten.com/how-to-fix-e...ly-became-raw/
    to retrieve them.

    I should point out that two things were key for me:
    1. In answer to the question "Should TestDisk search for partition created under Vista or later?", I had to answer "Y". If I answered "N", TestDisk would find the lost partition but that partition would not appear when rebooting into XP.
    2. I had to use the XP CD-ROM to run Recovery Console and then run the command: chkdsk e: /r
    The chkdsk process took 14 hours! At the end of it though, I rebooted and XP recognised the partition and the files on it.

    Needless to say, I immediately did a back up of the data files.

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