ubuntu 18.04.1 with Windows 10 dual boot - 'grub-efi-amd64-signed' error hell?

Question

I have Windows 10 and I am trying to install ubuntu 18.04.1 with no success. Here is my system info:

HP Envy x360 Laptop with SSD (with GPT)
I have 100 MB EFI System parition (installed with Windows 10) Here is my Disk Partition table
Windows 10 is installed in UEFI mode
Windows 10 Fast Reboot is disabled
From BIOS Secure Boot is disabled
ubuntu 18.04.1 ISO copied to USB using Rufus 3.1 in GPT mode
On restart ubuntu USB loads fine as I clicked on 'Try ubuntu'
Once ubuntu is running then I click on Install ubuntu
And then I get this error:

The 'grub-efi-amd64-signed' package failed to install into / target/. Without the GRUB boot loader, the installed system will not boot.

I have tried many times by selecting/deselecting options like 'install 3rd party drivers', 'install updates during installation' but I always get the same error.

I have searched on web and many users are facing the same error and I have tried to apply some fixes / workarounds (like disabling Fast Reboot , disabling Secure Boot etc) but none worked in my case. I have even tried increasing the EFI partition size to 500 mb but I still got the same error.

Could someone please suggest a solution for this problem. I thought ubuntu is a friendly Linux distro and its installation will be as easy as installing Windows... but its giving me some pains....

I would really appreciate some help here.

EDIT:

Here is my Parted -l result

Thanks, Maverick

Try the original 18.04 ISO and it should install fine without internet — Jeremy31, Aug 22 '18 at 21:36
I tried 18.04 and it was also giving the same error and then I downloaded 18.04.1 thinking may this bug is fixed in updated release. — Dany, Aug 23 '18 at 03:47
Post results from Ubuntu Live ISO from terminal for sudo parted -l — Jeremy31, Aug 25 '18 at 18:16
I have shared the result in my original post (at the end link to image) — Dany, Aug 26 '18 at 18:08
Some have needed chkdsk on ESP from Windows or dosfsck from Linux on the ESP partition. sudo dosfsck -t -a -w /dev/sda2 Then try fixing with Boot-Repair. https://help.ubuntu.com/community/Boot-Repair — oldfred, Aug 26 '18 at 18:24
Possible duplicate of Ubuntu 16.04: grub-efi-amd64-signed failed to install into /target/ error — karel, Oct 09 '18 at 01:43

score 0 · Answer 1 · answered Aug 26 '18 at 18:26

0

I would boot into the Ubuntu Live without installing and in terminal do one line at a time

sudo mkdir -p /mnt/boot/efi
sudo mount /dev/sda7 /mnt
sudo mount /dev/sda2 /mnt/boot/efi
for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done
sudo chroot /mnt
apt-get update
apt-get install --reinstall grub-efi grub-efi-amd64 grub-efi-amd64-signed
os-prober
update-grub
exit

Then see if you can boot into the install

answered Aug 26 '18 at 18:26

Jeremy31

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Tried this. Executed the given command line by line. But getting the same error !!! – Dany Sep 01 '18 at 06:45

ubuntu 18.04.1 with Windows 10 dual boot - 'grub-efi-amd64-signed' error hell?

1 Answers1