1. open up grub config file and remove

vim /etc/default/grub;

2. on this line remove the word “quiet”

GRUB_CMDLINE_LINUX_DEFAULT="resume=/dev/sda1 showopts splash quiet"

3. re generate grub config files

3.1. on redhat/centos/suse12

grub2-mkconfig -o /boot/grub2/grub.cfg

3.1. on debian/ubuntu

update-grub
update-grub2

#which runs:

grub-mkconfig -o /boot/grub/grub.cfg

4. reboot and you should see a more verbose kernel

while one is on it…

speed up the boot process by reducing grub timeout from 5 to 1 (it really pays off)

vim /etc/default/grub

# modify 1 = wait 1 second until entry 0 is booted
GRUB_TIMEOUT=1

# to generate new /boot/grub/grub.cfg
# Debian/Ubuntu
update-grub2
# update-grub2 can not be found in Debian10?
# it is probably this problem
su - root
# try again
update-grub2

# RedHat/Fedora/CentOS
grub2-mkconfig -o /boot/grub2/grub.cfg

on older debian / grub1

“wheezy”? “squeeze”?

checkout this config file:

vim /boot/grub/menu.lst

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