Preview

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Installing

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Ubuntu

copy the extracted theme to /boot/grub/themes

sudo cp Legion-grub-theme /boot/grub/themes/ -r

sudo nano /etc/default/grub

At the bottom of the file, paste the following, updating the path to the theme.txt file GRUB_THEME=/boot/grub/themes/Legion-grub-theme/theme.txt

Press CTRL+O, Enter, CTRL+X to write the changes

Update grub

sudo update-grub

If everything is setup correctly, a line that reads Found theme: /boot/grub/themes/Legion-grub-theme/theme.txt should show in the update-grub output

Reboot to see the new theme in action

sudo reboot

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Linux Mint

Easy way to install theme:

sudo nano /etc/default/grub.d/90_custom.cfg

add the lines:

GRUB_TIMEOUT="5"
GRUB_TIMEOUT_STYLE="menu"

apt install --reinstall -o Dpkg::Options::="--force-confmiss" grub2-theme-mint

Then replace theme folder in /boot/grub/themes

sudo open /boot/grub/themes

Update grub

sudo update-grub

Reboot

sudo reboot

You may also install it via Ubuntu way

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Fedora

Download and Extract the theme. (make sure to look inside the folder if there are any other versions of the theme.

Open the Terminal and copy the file to /boot/grub2/theme, for example

sudo cp -r poly-light /boot/grub2/theme

Next after copying, you go into the grub config like so

sudo nano /etc/default/grub

Comment out the line GRUB_TERMINAL_OUTPUT=console, by putting a # infront of it, and make a new like with the following:

GRUB_THEME="/boot/grub2/theme/INSERT-THEME/theme.txt"

Change INSERT-THEME to whatever the name of the folder is, that you copied earlier. Then you can press CTRL+S and CTRL+X to exit the config.

Finally you type:

sudo grub2-mkconfig -o /etc/grub2-efi.cfg

When you've done this, you can reboot and see if the theme applied!

sudo reboot

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Removing the Theme

cd /boot/grub/themes/

ls

sudo rm Legion-grub-theme -r

sudo update-grub

reboot