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I installed Windows 10 on an Acer V5-472-6419 laptop. It created about 4 other partitions. After that I installed Ubuntu 14.04 LTS. I disabled fast startup in Windows 10.

When I choose Windows Boot Manager on GRUB I get an error message that starts with /EndEntire and ends with /EndEntire error: cannot load image. If I change the order of the operating systems on the setup I get to load Windows 10 or Ubuntu 14.04 LTS, but not by using GRUB.

Error image:

image

I tried to add a menuentry but it didn't work for me:

menuentry ‘Windows 10′ {
set root='(hd0,msdos1)’
chainloader +1
}
andrew.46
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Juanemc2
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3 Answers3

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I completely spaced out and forgot about this bug, which is almost certainly the cause of your problem:

https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1091464

There are a number of workarounds noted in the bug report, but the two simplest are:

  • Disable Secure Boot in your firmware. Details of how to do this vary from one system to another. I wrote a Web page that shows a few examples; see here if you need help.
  • Install my rEFInd boot manager. It will take over as your primary boot program, and it lacks this problem, so you should be able to boot either OS with Secure Boot enabled. You can install it from the Debian package or using the PPA.
Rod Smith
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Can you boot into ubuntu if yes then try sudo update-grub if not fixed then i think its a compatabilaty problem when 14.04 was released there was no windows 10 if sudo update-grub dosent fixes the issue try installing 15.04 insted .

Shantanu Shady
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Steps to Install Windows 10 and Ubuntu 14.04.3 LTS with a start menu to select the OS at startup on an Acer v5-472-6419 Laptop

  1. Wipe the disk

    sudo dd if=/dev/zero of=/dev/sda (or the right path to your hdd)

  2. Install Ubuntu 14.04.3 LTS 64 bits

    I used this ISO: ubuntu-14.04.3-desktop-amd64.iso
    I wiped the pendrive using GPARTED
    I delete its partition, create a new FAT32 partition
    I mount it with the file explorer, selecting the USB drive I installed it to a pendrive using:

    7z x /media/DATA/SW/ubuntu-14.04.3-desktop-amd64.iso -o/media/3228-9BA3/

7z x path-to-UBUNTU-ISO/ubuntu-14.04.3-desktop-amd64.iso -o/mount-point-to-pendrive/

    I installed ubuntu creating my own partitions:

    500 MB EFI partition
    60000 MB Ubuntu root partition ext4 (mount point /)
    8000 MB Swap drive

  3. Install Windows 10 Single Language (Spanish) 64 bits

    I wiped the pendrive using GPARTED
    I deleted its partition, created a new FAT32 partition
    I mounted it with the file explorer, selecting the USB drive
    I installed it to a pendrive using:

    7z x /media/DATA/SW/Win10_SingleLang_Spanish_x64.iso -o/media/E731-CA23/

7z x path-to-WINDOWS-10-ISO/Win10_SingleLang_Spanish_x64.iso -o/mount-point-to-pendrive

    I installed Windows 10 to a 60 GB NTFS partition.

    Windows 10 automatically used the EFI partition I had created before during Ubuntu installation.

    I disabled Windows 10 fast boot:

    Go to Power options -> Select the behaviour of the on/off button
    Go to the bottom of the window and check out (deselect) the fast startup option

  4. At this point I was able to boot either Ubuntu or Windows by selecting them on the BIOS/Setup of the laptop.

    Change the boot order and leave Ubuntu as a prior option to Windows 10.

  5. Boot to Ubuntu and install rEFInd Boot Manager

    First add the repository:

    sudo apt-add-repository ppa:rodsmith/refind

Update:

    sudo apt-get update

Install rEFInd:

    sudo apt-get install refind

THE END

At this point everything was running and I could boot both Windows 10 and Ubuntu 14.04 with a start menu provided by rEFInd

What I gained installing first Ubuntu, and after that Windows 10 was that the Ubuntu installation didn't install GRUB2 which have proven not to work properly before. I don't know at this point if Grub would have interfered with rEFInd but I think it would.

I created an NTFS DATA partition with the remaining space (about 300GB) to be used with both operating systems.

Thanks for all the work and collaboration! Specially to Rod Smith I can't express here how happy I am! I thought I would never accomplish this!

techraf
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Juanemc2
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