Enable GRUB menu and timeout
Even if you don't multiboot several operating systems it might be useful to show GRUB menu and give a little timeout to pick the right item.
Process is straightforward on Ubuntu – just edit following file:
sudo nano /etc/default/grub
Find following default values:
And change them to following:
Don't forget to propagate GRUB configuration:
I have recently ran that on Linux Mint and it showed following:
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/50_linuxmint.cfg'
Sourcing file `/etc/default/grub.d/60_mint-theme.cfg'
Generating grub configuration file ...
Found theme: /boot/grub/themes/linuxmint/theme.txt
Found linux image: /boot/vmlinuz-5.3.0-45-generic
Found initrd image: /boot/initrd.img-5.3.0-45-generic
Found linux image: /boot/vmlinuz-5.3.0-42-generic
Found initrd image: /boot/initrd.img-5.3.0-42-generic
Found linux image: /boot/vmlinuz-5.0.0-32-generic
Found initrd image: /boot/initrd.img-5.0.0-32-generic
Adding boot menu entry for EFI firmware configuration
Note that it mentions theme
/boot/grub/themes/linuxmint/theme.txt – this might be a good chance to give your bootloader some personal touch :)
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My name is Gytis Repečka, I am Solution Architect and data professional. I enjoy using, promoting and contributing to open source software and love communicating about tech to both advanced and non-tech people. Visit Inretio for consulting services. Comment by mentioning me @firstname.lastname@example.org on Fediverse.