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Thread: Install 12.10 on Win 8 machine > 12.10 amd64 not loading with Boot Security Enabled

  1. #1
    Join Date
    May 2007
    Beans
    12

    Install 12.10 on Win 8 machine > 12.10 amd64 not loading with Boot Security Enabled

    I recently bought an Asus laptop with Windows 8 preinstalled and had hoped to dual-boot it with Ubuntu 12.10. I created a USB but my USB only boots when I have Boot Security disabled. In that mode, I am unable to resize the Win8 partition to create room for Ubuntu. When I enable Secure mode, it allows me to choose the try live option but does not actually boot once I choose it. Any suggestions? I have used https://help.ubuntu.com/community/UEFI as my guide but, since it will not boot with security enabled, I am stuck.

  2. #2
    Join Date
    Jun 2009
    Location
    SW Forida
    Beans
    Hidden!
    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: Install 12.10 on Win 8 machine > 12.10 amd64 not loading with Boot Security Enabl

    I think most users have had to turn secure boot off to get any external device to boot. Can you boot a Windows Repair flash drive. Some have reported that does not work either so if Windows does not boot, you cannot repair system. Make sure you have the newest UEFI/BIOS installed as vendors are making lots of updates.

    Use Windows Disk tools to resize the Windows partition and reboot so it can run chkdsk or make other fixes to its new size.

    A few computers will only boot in BIOS mode, better to install in UEFI mode, but if necessary Boot-Repair can convert a BIOS install to UEFI.

    Acer Aspire S7 can't install ubuntu - UltraBook erased RAID meta-data
    http://ubuntuforums.org/showthread.php?t=2121187
    Acer V5-571P-6815 secure boot off worked Shows Diskpart
    http://ubuntuforums.org/showthread.php?t=2081311
    Asus N56VJ-SH71-CD Shows default Windows partitions Post #25 install instructions
    http://ubuntuforums.org/showthread.php?t=2105622
    Asus x202e dual boot Win 8 full and Ubuntu post #13
    http://ubuntuforums.org/showthread.php?t=2092966
    ASUS K55A Windows 8 & Ubuntu Some Asus need this boot parameter pci=nomsi
    http://ubuntuforums.org/showthread.php?t=2088499
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

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