Show kernel messages at boot
 

I am using pop os and it just shows grey screen while computer boots all time. How i can see them?

Have a look here -->https://askubuntu.com/questions/2502...during-boot-up

This is for Ubuntu, however, if you boot with grub, the steps should be the same.

When did hiding things from the sysadmin become the default in Linux? We made a wrong turn and need to go back.

This is a decision each distro makes. This is done on thse 'beginner distros' so they are not so intimidating.

Slackware doesn't hide a thing.

Edit /etc/default/grub, and remove "quiet" from wherever you find it. This edit will take effect only after /boot/grub/grub.cfg is regenerated. If plymouth is installed, uninstall it, which should perform a regeneration, as well as save some disk space, quicken boot, and display lots of messages during boot.

Actually, many operating systems do similar things. Mac's "MacOS" (nee "OS/X") normally presents a lovely logo-screen, but it's possible to switch to a mode where "the messages fly by." (In case they suddenly stop.) I'm not sure about Windows, but I bet they have such a thing too. Most folks simply don't want (or need) to see them.

Also*– Linux provides a command ... dmesg, I believe ... which allows you to review those messages after the system has successfully started up.

I used to boot with "quiet" and often wondered where my lovely penguins had gone to. It turns out that if you want to see nproc penguins, you can't do it quietly.