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Thread: Cannot get Ubuntu 13.10 to dual boot with pre-installed windows 8.1. Weird problem

  1. #1
    Join Date
    Jan 2014

    Cannot get Ubuntu 13.10 to dual boot with pre-installed windows 8.1. Weird problem

    So I've installed Ubuntu on multiple pcs multiple times and this time i am stumped. So I have a UEFI bootloader and I've turned off secure boot, fast boot, and put it into csm mode. At one point i had them both booting perfectly but then i deleted the partition because i didn't like the partition layout. So what im encountering now is that every time i install ubuntu after formatting my hd partition and setting aside free space for it(using windows diskmanagement), the grub menu always boots into minimalist bash commands mode which makes it impossible to boot ubuntu. I've tried boot repair with the Live CD but it doesn't seem to work. What's weird is that i've reinstalled it about 7 times and each time im getting the same grub terminal at the start once i set my bios to boot ubuntu first. Something to take into account is that not once has my windows os has been affected in way shape or form. I somehow am always able to boot into windows perfectly. Could anyone give me any insight on this?

    edit: I have an asus x550lc model notebook
    Last edited by ali12; January 27th, 2014 at 05:28 PM.

  2. #2
    Join Date
    Jun 2009
    Chicago Suburbs
    Ubuntu 14.04 Trusty Tahr

    Re: Cannot get Ubuntu 13.10 to dual boot with pre-installed windows 8.1. Weird proble

    Did your first install work because it was CSM/BIOS. From grub you would not be able to dual boot if Ubuntu is in CSM mode. But can dual boot from UEFI menu or one time boot key.

    Some systems only boot Windows from UEFI menu, Boot-Repair has a work around.
    And they may only install in BIOS mode, and Boot-Repair can convert to UEFI.

    Asus seems to have a different model number on every computer it builds. Not sure what may be similar to yours.

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    ASUS K55A Windows 8 & Ubuntu Some Asus need this boot parameter pci=nomsi
    Asus x202e dual boot Win 8 full and Ubuntu post #13
    Asus UltraBook - kernel comparisons K56CA
    Asus Zenbook Prime UX31A (UEFI) Blank screen resolved by turning secure boot off, many tests of Boot parameters
    install 13.04 on asus ux32a, problems with usb boot - several reports working well no details
    Asus x55u UEFI change to BIOS
    Asus ASUS Zenbook Prime UX32VD Windows vs Linux
    For more info on UEFI boot install & repair - Updated Oct 2015:
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