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I have a problem when I start my computer. The problem is that when I start the computer, grub doesn't appear but it is installed. Firstly, I installed Ubuntu instead of Fedora 21 (I had Windows 8.1 but it was erased too). Then, when I started the computer, the screen shown a purple frame and a black square inside. I tried to 're-install' grub, with the following commands:

sudo grub-install /dev/sda

sudo update-grub

I followed these instructions: Grub menu won't show up after updating Ubuntu, can boot only into Windows

At this point, I could see that when I started the computer, the screen shows a purple square, without the black frame. The grub config is by default.

Furthermore, I tried to re-install Ubuntu and I made an installation from scratch, but it doesn't work again. I have the same issue. I don't have more partitions, so I don't know what is happening. Also, I didn't find this problem searching in the web (maybe it is, but I didn't find it).

I'm not used to asking about doubts or troubles, so I don't know if it is the right place and if I have to put more info.

Thanks!

Community
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Joseca
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    You have to boot into your BIOS and select which OS to boot in the (U)EFI menu. See http://askubuntu.com/questions/221835/installing-ubuntu-on-a-pre-installed-windows-8-64-bit-system-uefi-supported. – Panther Dec 20 '14 at 20:21
  • People keep advising to re-install or repair GRUB when this happens, but re-installing grub will not help (as you can clearly see) – Panther Dec 20 '14 at 20:21
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    See the "TROUBLESHOOT

    YOUR COMPUTER BOOTS DIRECTLY TO WINDOWS" section ;)

     – Panther Dec 20 '14 at 20:22

1 Answers1

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You might have to create a separate /boot partition(if you have not done it already during installation) I think this can help you: boot partition

always_noob
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