Grub error "/boot/grub/x86_64-efi/normal.mod not found" after installing Ubuntu

caml · 04-26-2018, 06:23 AM

.Hi, i`ve just installed Ubuntu 17.10 on my laptop, alongside with a previous Windows 7 installation. But when i turn it on, this message is shown:
"file /boot/grub/x86_64-efi/normal.mod not found"
I tried auto boot-repair using a live CD but it didn`t work.
This is the output of boot-repair "online report":
http://paste.ubuntu.com/p/gmwS9ssmcJ/

colorpurple21859 · 04-26-2018, 10:00 AM

It looks like Ubuntu/grub was installed in legacy mode. It appears that you have Ubuntu boot loader on your efi partition left over from a previous install that was done in efi mode. It is better to not mix efi and legacy together.
To fix without reinstalling boot from a live cd connected to the internet open a terminal:

Code:

sudo mkdir /mnt/sda4
sudo mount /dev/sda4 /mnt/sda4
sudo mkdir /mnt/sda4/boot/efi
sudo mount /dev/sda1 /mnt/sda4/boot/efi
sudo apt-get install grub-efi
sudo grub-install --target=x86_64-efi --boot-directory=/mnt/sda4/boot /dev/sda

caml · 04-26-2018, 12:09 PM

Worked!
Thank you!

colorpurple21859 · 04-26-2018, 12:19 PM

Your welcome

andrewysk · 12-25-2020, 11:37 AM

Quote:

Originally Posted by colorpurple21859

It looks like Ubuntu/grub was installed in legacy mode. It appears that you have Ubuntu boot loader on your efi partition left over from a previous install that was done in efi mode. It is better to not mix efi and legacy together.
To fix without reinstalling boot from a live cd connected to the internet open a terminal:

Code:

sudo mkdir /mnt/sda4
sudo mount /dev/sda4 /mnt/sda4
sudo mkdir /mnt/sda4/boot/efi
sudo mount /dev/sda1 /mnt/sda4/boot/efi
sudo apt-get install grub-efi
sudo grub-install --target=x86_64-efi --boot-directory=/mnt/sda4/boot /dev/sda

Hii @colorpurple21859

I have the exact problem as caml has claimed.
My old hardware only has legacy boot mode. But Endea linux that i have installed, insist me to use EFI mode. When i refuse to comply with it's warning prompt and installed as instructed by the Endea Bios Boot installation instruction, i ended up with the exact error as this thread.
Can you explain what is the reason of the error ? and what are your STEPS did to fix overcome the problem ? I tried to understand your STEPS, but don't quite get it.

BTW, must i use the same sda4 and sda1 ? what if i already / or don't have sda4 ? Sda1 is surely the same..

Thank you.

colorpurple21859 · 12-25-2020, 12:49 PM

@ andrewysk,
You need to start your own thread to prevent confusion, even though you have the same message, the cause may be different.
Go here, download iso and put on usb or cd, boot and generate a boot info and post.
https://sourceforge.net/projects/boot-repair-cd/

burii · 01-20-2022, 09:45 PM

I came across this error "error file /boot/grub/x86_64-efi/normal.mod not found kali linux".

After doing grub fixes, the problem persisted. My "ls" on my grub rescue had the following partitions (hd0) (hd0,gpt1) (hd0,gpt2) and (hd0,gpt3).

If the grub fix doesn't work for you, get a Windows installation media(USB flash drive or CD) and start the windows installation up to a point where you delete the partitions created during Linux/ Ubuntu installation. Delete all the partitions and eject the flash drive/CD and start the Linux installation again. It worked for me.