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Thread: Windows partitions lost after installing ubuntu??

  1. #1
    Join Date
    Mar 2012
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    Windows partitions lost after installing ubuntu??

    Hi,
    I have two physical hard disks, one around 200GB and one 1TB. I had the large one splitted into 3 partitions around 300GB each. I used Windows XP.
    Yesterday I formatted the small disk and installed Ubuntu 10.4 (trying not to mess with anything in the large disk).
    Now from within Ubuntu I can see only the third partition of the large disk (referring as size 1TB).
    I tried to use GParted but it still mentions only one large partition (that contains only the files of the third previous partition).
    Any way to recover lost partitions?

    Thank you very much,
    Nick

  2. #2
    Join Date
    Nov 2007
    Location
    London, England
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    6,171
    Distro
    Xubuntu

    Re: Windows partitions lost after installing ubuntu??

    That's a bit worrying. Can you start a terminal and run the two commands
    Code:
    sudo fdisk -l
    sudo blkid
    and post the output here?

  3. #3
    Join Date
    Mar 2012
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    Re: Windows partitions lost after installing ubuntu??

    Quote Originally Posted by The Cog View Post
    That's a bit worrying. Can you start a terminal and run the two commands
    Code:
    sudo fdisk -l
    sudo blkid
    and post the output here?
    Disk /dev/sdb: 160.0 GB, 160041885696 bytes
    255 heads, 63 sectors/track, 19457 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: 0x000d1369

    Device Boot Start End Blocks Id System
    /dev/sdb1 1 19084 153285632 83 Linux
    /dev/sdb2 19084 19458 3002369 5 Extended
    /dev/sdb5 19084 19458 3002368 82 Linux swap / Solaris

    Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
    255 heads, 63 sectors/track, 121601 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: 0x4c5e4805

    Device Boot Start End Blocks Id System
    /dev/sda1 * 1 121601 976760001 42 SFS

    Disk /dev/sdc: 4137 MB, 4137680896 bytes
    255 heads, 32 sectors/track, 990 cylinders
    Units = cylinders of 8160 * 512 = 4177920 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x09ab09aa

    Device Boot Start End Blocks Id System
    /dev/sdc1 * 1 990 4039184 b W95 FAT32

    sudo blkid
    /dev/sdb1: UUID="89507a20-4644-4d9c-9e53-ca2f28a84363" TYPE="ext4"
    /dev/sdb5: UUID="a6a39719-6cc9-4de3-83d8-566eef6fc761" TYPE="swap"
    /dev/sda1: LABEL="HugeFiles" UUID="7C6052056051C714" TYPE="ntfs"
    /dev/sdc1: LABEL="RED 4GB" UUID="B215-FA4C" TYPE="vfat"

  4. #4
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    13,248
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    Ubuntu Mate Development Release

    Re: Windows partitions lost after installing ubuntu??

    The 1TB drive shows SFS -- which means any Basic Disks (MS's term for partitions) that were there before have been converted into Dynamic Disks. This is done automatically in MS Windows when you try to have more than 4 primary partitions on a single drive that is not GPT or UEFI.

    Linux can't handle Dynamic Disks, so it can't accurately report what is there, and it can't install to them.

    There are s couple of Windows products, which can be downloaded and burned to CD, that will convert Dynamic Disks back to basic -- but I think you have to purchase the PRO options of either: Partition Wizard or EASEUS Partition Master.
    Ubuntu 17.04 Mate, Mint 18.1 Mate; MS Win 8.1, MS Win10 Pro.
    Will not respond to PM requests for support -- use the forums.

  5. #5
    Join Date
    Mar 2012
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    Re: Windows partitions lost after installing ubuntu??

    Quote Originally Posted by Mark Phelps View Post
    The 1TB drive shows SFS -- which means any Basic Disks (MS's term for partitions) that were there before have been converted into Dynamic Disks. This is done automatically in MS Windows when you try to have more than 4 primary partitions on a single drive that is not GPT or UEFI.

    Linux can't handle Dynamic Disks, so it can't accurately report what is there, and it can't install to them.

    There are s couple of Windows products, which can be downloaded and burned to CD, that will convert Dynamic Disks back to basic -- but I think you have to purchase the PRO options of either: Partition Wizard or EASEUS Partition Master.
    Thank you very much,
    in about a week I am expecting my new disk, so then I will try to recover the partitions through windows. I was concerned that they may have been gone forever...

    anyway, now I am appreciating ubuntu speed - I am going to keep it for all my non windows work.

  6. #6
    Join Date
    Jun 2009
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    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: Windows partitions lost after installing ubuntu??

    SFS is dynamic partitions in Windows. But I thought dynamic only worked with Vista or 7? You normally get dynamic partition from the Windows 7 partitioning tool when you try to create more than 4 partitions. How did you get the SFS partition?

    Device Boot Start End Blocks Id System
    /dev/sda1 * 1 121601 976760001 42 SFS
    Dynamic volume is a Microsoft proprietary format developed together with Veritas (now acquired by Symantec) for logical volumes.
    You may be use a third-party tool, such as Partition Wizard MiniTool or EASEUS to convert a convert a dynamic disk to a basic disk without having to delete or format them.

    As such Linux does not work with dynamic volumes.
    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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