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Thread: Installed Knoppix does not boot due to change in USB port

  1. #1
    Junior Member
    Join Date
    May 2007
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    1

    Installed Knoppix does not boot due to change in USB port

    I need help as I am new to Linux. I have installed the Knoppix Live CD on a USB drive by first booting it in VMWare.
    1. Now whenever I try to boot it on other desktop, it fails to find root (it looks like somewhere it has hard registered the root drive as /dev/sda1) as the USB drive is now sdb instead of sda. So I have to again reboot, find the drive name (sda or sdb or sdc) and then pass it as kernel parameter. Can anyone please suggest, how can I have knoppix automatically find the root and boot without issues, I like the way xubuntu identifies drives with UUID, so even if the USB port changes, new partition arrives, the root is recognized correctly.

    2. After passing the root=/dev/sdxx, booting does fail for root drive, but further it fails while executing swapon /dev/sda1 during boot (now it's sdb1), and then I am dropped to the bash shell.

    It would be appreciable is someone can help me out in this. Thanks.

  2. #2
    Senior Member registered user
    Join Date
    Jul 2006
    Posts
    122
    boot with the knoppix CD and edit the fstab on /dev/sdb1 to reflect the change in root device.

    i.e.

    Change from: /dev/sda1 / ext3 defaults

    to: /dev/sdb1 / ext3 defaults





    As far as mount via UUID maybe google can turn up some help... been curious about this one myself.


    Take Care,
    -Justin
    One Mynds Eye

  3. #3
    Senior Member registered user
    Join Date
    Jul 2006
    Posts
    122
    "...been curious about this one myself. .."


    so I checked.... pretty straight forward:

    ' ls -l /dev/disk/by-uuid/ ' will show you all UUID's



    The entry in /etc/fstab should look like:

    # Device # Mountpoint #filesystem #Options
    UUID=f9ac5b2e-cc45-4479-8871-f9fc40134cf0 / ext3 defaults,noatime 0 0

    and the root= parameter for the kernel cmdline:

    root=UUID=f9ac5b2e-cc45-4479-8871-f9fc40134cf0



    Take care,
    -Justin
    One Mynds Eye

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