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After almost a week I've just about manged to install Ubuntu 12.04.3 LTS alongside Windows 8 on a Dell XPS 14 Ultrabook.

I have created a partition in Windows to store Ubuntu, rebooted from Windows Advanced Start Up options menu to an EFI USB containing Ubuntu. I've installed Ubuntu on my chosen partition with 4GB swap area also set aside.

During the install i get this error message:

The 'grub-efi-amd64-signed' package failed to install into /target/. Without GRUB boot loader, the installed system will no boot.

After some searching, i read that I should use Boot-Repair, which I've done following the instructions here.

However, after running Boot-Repair and choosing the auto diagnose and repair option, I get a message to

'Please close all your package managers (Software Center, Update Manager, Synaptic, ...) Then try again.'

Can someone please help me with what i need to do next as it's driving me mad!

Ubuntu has installed (if i try to reinstall on the same partition, my previous install is there) - it just seems i need to fix this problem.

Please help - Windows 8 is awful but I'm getting very tired of the endless pushing a big rock up a steep hill that installing Ubuntu is.

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Can anyone help? –  user2246804 Dec 19 '13 at 12:24
    
please indicate your Boot-Info URL ( help.ubuntu.com/community/Boot-Info ) –  LovinBuntu Dec 20 '13 at 20:08
    
@lovinbuntu there is no boot-info url when you get this error. the process aborts before it generates one. –  roberto tomás Apr 19 at 12:03
    
correct, but then you can click the "Create BootInfo" button so it generates an URL. –  LovinBuntu Apr 21 at 20:49
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