How hide all kernel messages

Hello, I don’t want see any kernel messages or any text while my laptop booting? thank you

You can change the level by using quiet loglevel=level, where level is any number between 0 and 7 inclusively. 0 is the most critical, and 7 is debugging messages. Try setting loglevel=3.

sudo mkdir -p /etc/kernel/cmdline.d
sudo tee /etc/kernel/cmdline.d/silent-boot.conf >/dev/null <<'EOF'
quiet loglevel=3
sudo clr-boot-manager update