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Thread: Ubuntu 10.04 - Unable to boot from live CD

  1. #1
    Join Date
    Feb 2013
    Beans
    9

    Ubuntu 10.04 - Unable to boot from live CD

    I have screwed up my Ubuntu 10.04 install be deleting essential packages.

    When I boot from 12.04 live CD I get the error:
    No boot device available, Press ENTER key to retry

    Grub also won't load, I get the error:
    Error 15: File not found.

    The Ubuntu live CD does work, I have tried it on another PC.

    Using a CentOS CD I don't get the "No boot device available..." error message and can get to a command line and use apt-get to install packages. However it is so broken it really needs a fresh install.

    Why won't the Ubuntu live CD work and the CentOS one will?

    Is there a way to get the Ubuntu CD to boot? I don't want to install CentOS and then install Ubuntu after.

  2. #2
    Join Date
    Jun 2007
    Location
    Nottingham, UK
    Beans
    1,659
    Distro
    Ubuntu

    Re: Ubuntu 10.04 - Unable to boot from live CD

    Your computer probably isn't set to boot from the CD.

    You need to go into your BIOS settings and make sure it's trying to boot from a CD BEFORE it tries the hard-drive.
    email: me@rory.sh
    IRC: ​blazemore@freenode

  3. #3
    Join Date
    Feb 2013
    Beans
    9

    Re: Ubuntu 10.04 - Unable to boot from live CD

    It is definitely booting from the CD. It boots OK from the CentOS CD. But comes up with this error with the Ubuntu CD.

  4. #4
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Ubuntu 10.04 - Unable to boot from live CD

    Error 15 is a grub legacy error. Did you have grub legacy on hard drive?

    Did you correctly download and install to CD/DVD/Flash drive? If you can boot from flash drive that is reusable and runs quicker than CD.

    Also instructions for CD/DVD or USB
    http://www.ubuntu.com/desktop/get-ubuntu/download
    Write image or burn image not copy ISO as one large file to CD.
    http://www.ubuntu.com/download/help/...-cd-on-windows
    https://help.ubuntu.com/community/BurningIsoHowto
    https://help.ubuntu.com/community/In...n/FromUSBStick
    https://help.ubuntu.com/community/BootFromCD
    https://help.ubuntu.com/community/LiveCD
    https://help.ubuntu.com/community/BootOptions
    https://help.ubuntu.com/community/HowToMD5SUM
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.




  5. #5
    Join Date
    Feb 2013
    Beans
    9

    Re: Ubuntu 10.04 - Unable to boot from live CD

    The CD doesn't seem to be the issue.

    My feeling is that the boot sector is corrupted and for some reason the Ubuntu CD tries to read from this where as the Centos CD doesn't.

    For my latest attempt I have a Ubuntu 10.04 CD which allows me to get to the install stage bit then does nothing, except show a blank screen.

  6. #6
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Ubuntu 10.04 - Unable to boot from live CD

    I think Ubuntu CD was issue.

    If CD is not correctly bootable system will default back to MBR of hard drive which then had grub legacy.

    Your other two CD are configured correctly to boot so they work.
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.




  7. #7
    Join Date
    Jun 2012
    Location
    Sweden
    Beans
    324
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Ubuntu 10.04 - Unable to boot from live CD

    Tried boot from an USB flash drive. Worked for my friend's computer.

  8. #8
    Join Date
    Feb 2013
    Beans
    9

    Re: Ubuntu 10.04 - Unable to boot from live CD

    There was an issue with the CD, although it could be read from the CD drive and booted there were errors reading from it. I found this when doing ctrl+alt F6 to reveal the text output.

    I created the CD again from an iso using a slow burn speed and a good quality disk, it now works.

    I can reformat the disk and install or install side by side or manually partition, how do I repair the install, there doesn't seem to be the option?

  9. #9
    Join Date
    Oct 2009
    Location
    Reykjavík, Ísland
    Beans
    8,710
    Distro
    Lubuntu 13.10 Saucy Salamander

    Re: Ubuntu 10.04 - Unable to boot from live CD

    Don't waste time repairing a 10.04 installation, as it is reaching end of life in two months:
    http://en.wikipedia.org/wiki/List_of...rsion_timeline

    A fresh install of 12.04.2 or 12.10 is a better option.
    About problems due to upgrading
    Bringing old hardware back to life.
    Please visit Quick Links -> Unanswered Posts

  10. #10
    Join Date
    Feb 2013
    Beans
    9

    Re: Ubuntu 10.04 - Unable to boot from live CD

    I wanted to keep my home dirs if possible.

    My idea was to repair then upgrade from 10.04 to 12.04 LTS.

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