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Thread: Problem using fsck

  1. #1
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    Problem using fsck

    Hi,

    I am running Ubuntu 12.04.

    I want to check and if necessary repair my file system. I gather I can use fsck to do this. Many of the instructions I have seen to do this begin with running the following command as root, to "take the system down to run level one" (whatever that means):

    Code:
    # init 1
    When I do this, I get a purple screen with the Ubuntu logo and the white/red dots. To begin with the latter turn over, then they freeze and nothing else happens. At that point I have to restart my computer.

    Can someone advise?

    Many thanks.

  2. #2
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    Re: Problem using fsck

    You must unmout the filesystem in order to check it and you cannot unmount a live filesystem, even in init 1. Solution here.

  3. #3
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    Re: Problem using fsck

    Thanks. How do I view the outcome of the check?

  4. #4
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    Re: Problem using fsck

    I... don't know. It may end up in some logfile somewhere but I don't know. If you want to see that, another solution is to use a liveCD (Ubuntu or Knoppix or any Linux), boot with it, then DON'T mount your drive, do "fdisk -l /dev/sda" to verify that it's the proper disk, then "fsck /dev/sda1". You probably need sudo in front of those two commands. Then reboot.

  5. #5
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    Re: Problem using fsck

    Quote Originally Posted by dargaud View Post
    I... don't know. It may end up in some logfile somewhere but I don't know. If you want to see that, another solution is to use a liveCD (Ubuntu or Knoppix or any Linux), boot with it, then DON'T mount your drive, do "fdisk -l /dev/sda" to verify that it's the proper disk, then "fsck /dev/sda1". You probably need sudo in front of those two commands. Then reboot.
    +1

    This is for linux ext2, ext3 and ext4 file systems. Make sure the drive is not mounted, run
    Code:
    sudo e2fsck -f /dev/sdxy
    where x is the drive letter and y is the partition number. -f means force a check, even if the first scan reveals no errors. You will get output to the terminal window, and in some cases a prompt to accept or deny a repair action.

    If it is a FAT or NTFS file system, it is best to check it from Windows using
    Code:
    chkdsk /f X:
    where X: is the volume letter.

  6. #6
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    Re: Problem using fsck

    Thanks.

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