bad super block - PM2009 screwed it up - help

Discussion in 'Paragon Partition Manager Product Line' started by wyomingpat, Jan 24, 2010.

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  1. wyomingpat

    wyomingpat Registered Member

    Jan 24, 2010
    Further to that below from earlier:linux command line fsck reckons it is now an EXT2 file system and other disk handlers think it is EXT4 which it should be. Partion Manager definitely screwed up the super block as you cannot convert, I understand from linux blogs, EXT4 to EXT2.
    Also my file backup using PM to my DVD is unreadable so my data is stuck on this disk that I cannot access.
    root@patd-laptop:~# sudo fdisk -l /dev/sda

    Disk /dev/sda: 250.1 GB, 250059350016 bytes
    255 heads, 63 sectors/track, 30401 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0x3c5765e6

    Device Boot Start End Blocks Id System
    /dev/sda1 * 1 3824 30716248+ 83 Linux
    /dev/sda2 3825 30401 213479752+ 5 Extended
    /dev/sda5 3825 27962 193888453+ 83 Linux
    /dev/sda6 29117 30401 10321731 82 Linux swap / Solaris

    OK - Partition Manager 2009. My disk has 3 linux partitions. System, home and swap. They are ext4fs.

    I resized the system partition OK. I then resized the home in a separate operation. It is now inaccessible with a bad superblock. Tried deleting and undeleting but PM thinks it is an ext2fs.

    My linux disk utlilitities all see it OK and report space used etc but it will not mount. Gparted reports:
    GParted 0.5.0

    Libparted 1.8.8.git-dirty
    Grow /dev/sda5 from 184.91 GiB to 193.75 GiB 00:00:00 ( ERROR )

    calibrate /dev/sda5 00:00:00 ( SUCCESS )

    path: /dev/sda5
    start: 61432623
    end: 449209529
    size: 387776907 (184.91 GiB)
    check file system on /dev/sda5 for errors and (if possible) fix them 00:00:00 ( ERROR )

    e2fsck -f -y -v /dev/sda5

    e2fsck: Group descriptors look bad... trying backup blocks...
    e2fsck: going back to original superblock
    Filesystem mounted or opened exclusively by another program?
    e2fsck 1.41.9 (22-Aug-2009)
    e2fsck: The ext2 superblock is corrupt when using the backup blocks
    e2fsck: Device or resource busy while trying to open /dev/sda5

    Last edited: Jan 24, 2010
  2. Paragon_Tommy

    Paragon_Tommy Paragon Moderator

    Aug 10, 2009
    Paragon undelete won't be able to recognize a Ext4 partition. Try a program like to see if it works.

    Good luck.
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