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So basically I've installed Ubuntu GNOME alongside an existing Windows 10 install, and I can't boot into Ubuntu at all. I can't access the UEFI boot menu through Windows Advanced Restart (which is something I used to be able to do, did Windows patch this out?...).

I tried running this command which I found on various sites saying that it will make the GRUB bootloader load first:

bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi

But now my computer just boots to a blank screen for a minute or so before finally loading Windows 10. Any suggestions?

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  • Did you recently update Windows to the Anniversary Update? That update borked Grub and you may need to repair/reinstall it.
    – negusp
    Oct 24, 2016 at 12:04
  • Please run the Boot Info Script. This will generate a file called RESULTS.txt. Post that file to a pastebin site and post the URL to your document here. Also, please tell us what make/model computer (or motherboard) you're using. Some manufacturers are known to deliver broken EFIs.
    – Rod Smith
    Oct 25, 2016 at 15:43
  • I've made some progress, but I still have issues. Please see this post for an update: askubuntu.com/questions/841941/… Oct 26, 2016 at 9:26

1 Answer 1

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Have you tried Boot-Repair?

I had the same problem while dual-booting. In my case, i had lost the grub totally.

so make make a bootable ubuntu pen-Drive and boot into it. go in live mode. and follow the instructions Here

It worked fine for me. (wanted to comment this but too low rep.)

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