kdump
enabled, and make sure that the service is running (refer to Section 8.2, “Running Services” for more information on how to run a service in Fedora):
systemctl is-active kdump.service
echo 1 > /proc/sys/kernel/sysrq
echo c > /proc/sysrq-trigger
address
-YYYY-MM-DD
-HH:MM:SS
/vmcore
file will be copied to the location you have selected in the configuration (that is, to /var/crash/
by default).