Edit file File name : dmesg.service Content :[Unit] Description=Save initial kernel messages after boot [Service] Type=idle StandardOutput=file:/var/log/dmesg ExecStartPre=-/usr/bin/savelog -q -p -n -c 5 /var/log/dmesg ExecStart=/bin/journalctl --boot 0 --dmesg --output short-monotonic --quiet --no-pager --no-hostname ExecStartPost=/bin/chgrp adm /var/log/dmesg [Install] WantedBy=multi-user.target Save