When I am trying to install ubuntu 16.04 in computer the GRUB installation failed

Is Ubuntu the only operating system on the PC or are you setting up a dual boot?

My pc is duel boot with windows xp.

On Sun, Dec 10, 2017 at 5:33 PM, actionparsnip <
<email address hidden>> wrote:

> Your question #661541 on grub-installer in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/grub-installer/
> +question/661541
>
> Status: Open => Needs information
>
> actionparsnip requested more information:
> Is Ubuntu the only operating system on the PC or are you setting up a
> dual boot?
>
> --
> To answer this request for more information, you can either reply to
> this email or enter your reply at the following page:
> https://answers.launchpad.net/ubuntu/+source/grub-installer/
> +question/661541
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Does XP support UEFI?

Why are you using a dead unsupported and unsecured OS?

I have a same problem that you,
please if you obtain a solution help me!

Now tell me what to do? Should I format my hard disc?

If you want. It's a cleaner way to resolve the issue. You can restore your user data from your backups.

I am also having the same problem with Ubuntu 18.04 LTS with Windows 10 dual boot. I tried several times but it is always showing The 'grub-efi-amd64-signed' package failed to install into / target/. Without the GRUB boot leader, the installed system will not boot.
What should I do to resolve this issue to dual boot?
Please help.

Getting same error message on clean installation to HP laptop. No other OS installed. Ubuntu seems to work flawlessly as long as I boot from installation USB thumb drive and leave it plugged in.

Same error message for me when I try to install Ubuntu 18.04 LTS on a second HD (the first one has Widows 7).
Somebody can help me?