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Thread: help changing uuid label

  1. #1
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    help changing uuid label

    Greetings,

    I recently changed a mount point for one of my partitions. As a result, I get two entries in nautilus. One under to old LABEL which is accessible and the new label which when clicked on gives an error message that the the mountpoint is either already mounted or busy. So I went searching the forums and came up with some data to share concerning my system. It follows:


    Code:
    [mydsktp ~]$ sudo blkid -c /dev/null
    /dev/sda1: LABEL="root" UUID="0eaa02f9-8d4a-40b6-b282-9001ca383700" TYPE="ext3" 
    /dev/sda5: LABEL="Home" UUID="b34aa478-7495-4e4a-bfba-f31d24d268eb" TYPE="ext3" 
    /dev/sda6: UUID="e3c944e6-00af-44f5-b937-6d5999325148" TYPE="swap" 
    /dev/sda7: LABEL="MyDwnlds" UUID="969e7370-b0e5-4127-85e1-745cb500d6b8" TYPE="ext3" 
    /dev/sdc5: LABEL="My_Book" UUID="0a3b8fc4-062f-4ff6-81d5-f3ba03f1d425" TYPE="ext3" 
     [mydsktp~]$
    This is a cat of my fstab file:

    Code:
     /etc/fstab: static file system information.
    #
    # Use 'blkid -o value -s UUID' to print the universally unique identifier
    # for a device; this may be used with UUID= as a more robust way to name
    # devices that works even if disks are added and removed. See fstab(5).
    #
    # <file system> <mount point>   <type>  <options>       <dump>  <pass>
    proc            /proc           proc    defaults        0       0
    # / was on /dev/sda1 during installation
    UUID=0eaa02f9-8d4a-40b6-b282-9001ca383700 /               ext3    errors=remount-ro 0       1
    # MyDwnlds was on /dev/sda7 during installation
    UUID=969e7370-b0e5-4127-85e1-745cb500d6b8 /media/Downloads       ext3    rw,users,auto,user_xattr        0       2
    # /home was on /dev/sda5 during installation
    UUID=b34aa478-7495-4e4a-bfba-f31d24d268eb /home           ext3    defaults,user_xattr        0       2
    # swap was on /dev/sda6 during installation
    UUID=e3c944e6-00af-44f5-b937-6d5999325148 none            swap    sw              0       0
    /dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0
    /dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
    # UUID=0a3b8fc4-062f-4ff6-81d5-f3ba03f1d425	/media/My_Book	ext3	rw,users,auto	0	0
    I changed my mount point from /MyDwnlds to /media/Downloads. I know but I was tired the night I did the install and forgot to put MyDwnlds under the media folder. So I am fixing it now . And last but not least below is a screenshot of the filemanager. I have rebooted a couple of times but it stills shows the two entries. Is there a way to fix this in nautilus or change the Label using blkid?

    Thanks in Advance
    skaramanger
    Last edited by skaramanger; July 8th, 2010 at 05:11 AM.
    M2N-SLI with AMD Phenom II X4 940 8GB of 400Mhz 128bit DDR2 RAM, an Evga GTX560ti Video card Phoenix Bios Rev. 5001

    Kubuntu 12.10 (do-release-upgrade)

  2. #2
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    Re: help changing uuid label

    Try deleting nautilus's saved configuration. This will cause nautilus to auto reconfigure itself.

    Open your terminal application

    Code:
    rm -rf .nautilus
    Note: This will cause you to lose all settings you have put in nautilus.

  3. #3
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    Re: help changing uuid label

    Have you tried with more basic mount options?
    Code:
    UUID=969e7370-b0e5-4127-85e1-745cb500d6b8 /media/Downloads       ext3    defaults        0       2
    Try that first to get the partition to mount in the first place, and then start changing the options to your needs.

    Anyway, your problem is simply that something in your fstab entry is not correct, which prevents the partition from being mounted at that time. It then gets automounted (using the label) at later time, but the new name still appears in Nautilus because the actual directory with that name exists in /media. As soon as you get the fstab entry to work correctly the drive wll be mounted using fstab instead of automounting it.
    Last edited by mcduck; May 15th, 2010 at 07:28 AM.

  4. #4
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    Re: help changing uuid label

    Kio_http, thanks for you reply.

    Sorry but that folder is empty to begin with. Nothing to delete.
    M2N-SLI with AMD Phenom II X4 940 8GB of 400Mhz 128bit DDR2 RAM, an Evga GTX560ti Video card Phoenix Bios Rev. 5001

    Kubuntu 12.10 (do-release-upgrade)

  5. #5
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    Re: help changing uuid label

    mcduck,

    Is what is incorrect that I changed the mount point to /media/Download and replaced /MyDownloads in fstab? Should I remove the parameter auto from fstab? That turns off automounting right?

    Thanks for your reply,
    M2N-SLI with AMD Phenom II X4 940 8GB of 400Mhz 128bit DDR2 RAM, an Evga GTX560ti Video card Phoenix Bios Rev. 5001

    Kubuntu 12.10 (do-release-upgrade)

  6. #6
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    Re: help changing uuid label

    You can change the partition label from Dnloads to Downloads with any of these methods:

    Via Gparted (System, Admin, Gparted)
    Via Disk Utility (System, Administration, Disk Utility)
    Via command line:
    Code:
    sudo tune2fs -L Downloads /dev/sda7
    Your title mentions changing the UUID label. More accurately, you would change the partition label. If you want to change the UUID, which isn't necessary in this case since you don't have duplicate UUIDs, you can use tune2fs to do that as well. See "man tune2fs".

    If you make any changes in fstab, you can check to see if they work by closing open apps and running the following. System partitions will show busy, but others should unmount and then mount again.
    Code:
    sudo umount -a && sudo mount -a
    or
    Code:
    sudo umount /dev/sda7  && sudo mount /dev/sda7
    Last edited by drs305; May 16th, 2010 at 04:22 PM.
    GRUB2

    Retired.

  7. #7
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    Re: help changing uuid label

    Thanks DRS305 that did the trick!
    M2N-SLI with AMD Phenom II X4 940 8GB of 400Mhz 128bit DDR2 RAM, an Evga GTX560ti Video card Phoenix Bios Rev. 5001

    Kubuntu 12.10 (do-release-upgrade)

  8. #8
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    Re: help changing uuid label

    Well I spoke too soon. Using tune2fs -L <New Label> did change the name of the label, but did not actually 'fix' the problem. I then just commented out the offending line in fstab and this removed duplication in nautilus. However, I now have to mount it manually and I get prompt for a password when I click on Downloads in the nautilus left pane of available folders window. I also removed the /media/Downloads folder. Automount was mounting the filesystem under /media/Downloads_. So I would tentatively called it remedied but not solved. Still open to suggestions as to how to proceed from here. My objective is to have it mount automatically w/o me have to tickle a keyboard or click an icon.

    Thanks
    M2N-SLI with AMD Phenom II X4 940 8GB of 400Mhz 128bit DDR2 RAM, an Evga GTX560ti Video card Phoenix Bios Rev. 5001

    Kubuntu 12.10 (do-release-upgrade)

  9. #9
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    Re: help changing uuid label

    Do you have anything listed in your fstab for the partition? Make sure there isn't any other reference to Downloads or the partition - either by UUID or label. If not, try adding this. You will have to recreate your /media/Downloads folder. Make yourself the owner of the folder.

    LABEL=Downloads /media/Downloads defaults 0 2
    GRUB2

    Retired.

  10. #10
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    Re: help changing uuid label

    I think your manual settings in fstab are "fighting" with those used by FUSE to automatically mount external media. FUSE will attempt to create a new folder in /media with the same name as the disk label, and if it already exists will append an underscore to it, which is what you were seeing.

    My suggestion is to mount the disk in /mnt rather than /media and add an appropriate entry in fstab. FUSE will then ignore the disk and it won't appear in "Places".

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