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Thread: Unable to mount

  1. #1
    Join Date
    Oct 2010
    Beans
    51
    Distro
    Ubuntu 12.10 Quantal Quetzal

    Angry Unable to mount

    When inserting a USB flash drive (named "Sexy"), I'm getting an error message that indicates the drive can't be mounted.
    Error mounting /dev/sdb1 at /media/johnny/Sexy: Command-line `mount -t "ext4" -o "uhelper=udisks2,nodev,nosuid" "/dev/sdb1" "/media/johnny/Sexy"' exited with non-zero exit status 32: mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
    missing codepage or helper program, or other error
    In some cases useful info is found in syslog - try
    dmesg | tail or so
    running dmesg|tail results in:
    [ 1108.935236] scsi 8:0:0:0: Direct-Access pny USB 2.0 FD 1.00 PQ: 0 ANSI: 4
    [ 1108.936508] sd 8:0:0:0: Attached scsi generic sg2 type 0
    [ 1108.938594] sd 8:0:0:0: [sdb] 62816256 512-byte logical blocks: (32.1 GB/29.9 GiB)
    [ 1108.940569] sd 8:0:0:0: [sdb] Write Protect is off
    [ 1108.940583] sd 8:0:0:0: [sdb] Mode Sense: 2f 00 00 00
    [ 1108.942566] sd 8:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
    [ 1108.950402] sdb: sdb1
    [ 1108.957015] sd 8:0:0:0: [sdb] Attached SCSI removable disk
    [ 1109.869095] EXT4-fs error (device sdb1): ext4_iget:3743: inode #8: comm mount: bad extra_isize (44587 != 256)
    [ 1109.869107] EXT4-fs (sdb1): no journal found
    And of course it was right when I'd copied a bunch of important stuff to this drive, and I haven't yet gotten to back it up. So yeah.

    Is it recoverable, or am I just completely out of luck?

  2. #2
    Join Date
    Oct 2010
    Beans
    51
    Distro
    Ubuntu 12.10 Quantal Quetzal

    Re: Unable to mount

    So...?

  3. #3
    Join Date
    Dec 2005
    Location
    Western Australia
    Beans
    11,478
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Unable to mount

    You could try running fsck on the device? Is it formatted Ext4, by the way? That is what it is being detected as, but usually flash drives are preformatted as Fat32 (vfat).
    I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.

  4. #4
    Join Date
    Oct 2010
    Beans
    51
    Distro
    Ubuntu 12.10 Quantal Quetzal

    Re: Unable to mount

    Yes, I reformatted it as ext4 because I needed to create a truecrypt container that was about 6GB.

    Running fsck, it says:
    fsck from util-linux 2.20.1
    e2fsck 1.42.5 (29-Jul-2012)
    Superblock has an invalid journal (inode 8).
    Clear<y>?
    So, do I want it to clear?

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