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Thread: Problem with unknown partition

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  1. #1
    Join Date
    Sep 2012
    Beans
    12

    Problem with unknown partition

    I downloaded Gparted Partition and saw that there was an unknown Partition
    When I found out more, I knew that it is the Swap partition, and I have 2 Swap Partition:

    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: 0x6e304e05

    Device Boot Start End Blocks Id System
    /dev/sda3 2048 385931263 192964608 7 HPFS/NTFS/exFAT
    /dev/sda4 467855358 625141759 78643201 5 Extended
    /dev/sda5 617144320 625141759 3998720 82 Linux swap / Solaris
    /dev/sda6 467855360 613230591 72687616 83 Linux
    /dev/sda7 613232640 617136127 1951744 82 Linux swap / Solaris


    I do not know if I can delete one of these to have more free space.
    Could you guys give me some advices?

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

    Re: Problem with unknown partition

    It looks like sda5 is about twice the size of sda7.

    List UUIDs
    # To clear cache and get new view:
    sudo blkid -c /dev/null -o list


    Then in fstab see which is used. Both may be used if both existed during install. Change UUID to the one you want to keep.
    Then you'll have to edit fstab:
    sudo cp /etc/fstab /etc/fstab.backup
    gksu gedit /etc/fstab


    to confirm there are no typos, run this. If it gives no error message it has remounted everything in fstab ok.
    sudo mount -a
    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 2012
    Beans
    12

    Re: Problem with unknown partition

    There is just one swap partition during installation and it is on /dev/sd7. The other swap is still unknown and there is no information about the partition. This is what I recieved:
    # <file system> <mount point> <type> <options> <dump> <pass>
    # / was on /dev/sda6 during installation
    UUID=c3ae50a1-103c-4892-b306-8d390b991b96 / ext4 errors=remount-ro 0 1
    # swap was on /dev/sda7 during installation
    UUID=50ca4fbb-0663-4d0d-93f3-8fe2460dc43c none swap sw 0 0

    usbfs /proc/bus/usb usbfs auto 0 0
    none /proc/bus/usb usbfs devgid=46,devmode=644 0 0

    I do not know about change UUID, what is that?

  4. #4
    Join Date
    Nov 2009
    Location
    Segur De Calafell, Spain
    Beans
    11,694
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Problem with unknown partition

    From fstab it seems you are not using sda5. It might be corrupted or something from earlier (or if you tried manipulating it from windows). It should be safe to delete it but you can't use it for much except to expand sda7 because sda5 physically is after sda7, so you can't expand sda6 to use it for example.

    If you decide to delete it, do it from ubuntu not windows.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

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