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Thread: Live CD Fails to boot in UEFI Mode

  1. #1
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    Aug 2011
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    Question Live CD Fails to boot in UEFI Mode

    I am having an issue with my Asus q500a in booting any version of ubuntu in UEFI mode Live CD where I get the Grub Menu and when i select try Ubuntu the cd makes a sound like its spinning up and then the laptop locks up. Same with all other options including install ubuntu. I have secure boot and fast boot disabled.
    System Specs:
    3rd generation I5 @ 2.50 GHz
    6 Gigs of RAM
    Intergrated Intel HD Graphics Card
    Edit: I finally figured out how to boot the live cd in UEFI mode and with some minor tweaks to the install process am able to install and boot without any issues. It seems to be a problem with grub and my laptop which is solved by replacing grub with gummiboot. If anyone needs me to explain how i did it PM me.
    Last edited by Victini; February 16th, 2014 at 03:21 AM.

  2. #2
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    Re: Live CD Fails to boot in UEFI Mode

    I think some others have had issues with DVDs and others have had issues with flash drives.
    But I would suggest using a flash drive.
    Are you using the 64 bit version?

    You will need to use the 64 bit version of 12.10 or 12.04.2 and from the UEFI menu boot the flash drive in UEFI mode. That way it will install in UEFI mode.
    Systems need quick boot or fast boot turned off in UEFI settings. Vital for some systems. Best to backup efi partition and Windows partition first.
    Use Windows Disk Tools to shrink Windows main partition, but not to create any new partitions, if installing on same drive.
    https://help.ubuntu.com/community/UEFI
    https://wiki.archlinux.org/index.php/UEFI
    As of 12.04.2, it is possible to install on UEFI systems with Secure Boot enabled (using signed versions of Shim, GRUB, and the Linux kernel). This is only currently set up for Ubuntu (desktop, alternate, and server) and Edubuntu images due to pressures of time; we expect to enable it across the entire Ubuntu family for 12.04.3. Details:
    https://wiki.ubuntu.com/PrecisePango.../UbuntuDesktop
    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.







  3. #3
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    Re: Live CD Fails to boot in UEFI Mode

    I am using the 64 bit version of ubuntu. I have also tried using USB I get the same result as if booting from DVD. Fast boot is turned off and i am booting in UEFI mode. If I boot the Live CD in BIOS mode I get to Unity however it installs it in BIOS mode and I am unable to boot it after re-booting

  4. #4
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    Re: Live CD Fails to boot in UEFI Mode

    Boot-Repair can convert a BIOS install to UEFI by uninstalling grub-pc and installing grub-efi.

    How Boot-Repair works with UEFI systems - post 687 Dec 15, 2012
    http://ubuntuforums.org/showthread.p...769482&page=69
    How Boot-Repair fixes a Ubuntu with grub-pc with efi Windows
    http://ubuntuforums.org/showpost.php...&postcount=516

    Boot-Repair - Updated Jan 1, 2013 to not rename first time, but rename if first time Windows does not boot. Post 706 and 711
    http://ubuntuforums.org/showthread.p...769482&page=71
    Boot-Repair copied /EFI/ubuntu/grubx64.efi to /EFI/Boot/bootx64.efi (in case the BIOS is hard-coded to boot into /EFI/Boot/bootx64.efi or secure boot signed GRUB file shimx64.efi.
    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
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    Re: Live CD Fails to boot in UEFI Mode

    I'll try it and see if it works

  6. #6
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    Re: Live CD Fails to boot in UEFI Mode

    It didnt work. I get to the grub menu as as if its installed. Win8 boots fine from grub menu. Ubuntu does not however and completly locks up the computer the second I boot it.

  7. #7
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    Re: Live CD Fails to boot in UEFI Mode

    what is the computer model?

  8. #8
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    Re: Live CD Fails to boot in UEFI Mode

    Do you have secure boot on or off. Some boot both Ubuntu & Windows with either, some with it on and some with it off.

    Grub has the shim and a signed kernel, which may not be installed yet, but should be to make it work with secure boot.
    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.







  9. #9
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    Aug 2011
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    Re: Live CD Fails to boot in UEFI Mode

    its an asus q500a and I get a black screen on boot whether secure boot is on or off and i know its reading the shim right because when secure boot is on and the signature is invalid I get a different error than what im currently getting.

  10. #10
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    Re: Live CD Fails to boot in UEFI Mode

    If you get grub menu & can boot Windows and start Ubuntu then it is usually video issue or maybe other boot parameters.
    What video card/chip?

    Graphics Resolution- Upgrade /Blank Screen after reboot mega thread - MAFoElffen
    http://ubuntuforums.org/showthread.php?t=1743535
    How to set NOMODESET and other kernel boot options in grub2 - both liveCD & first boot, but different
    http://ubuntuforums.org/showthread.php?t=1613132
    https://help.ubuntu.com/community/BootOptions

    http://www.mjmwired.net/kernel/Docum...parameters.txt
    noapic nolapic noapci noirqpoll nosmp irqpoll
    http://www.kernel.org/doc/Documentat...parameters.txt
    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.







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