To free up space on C:, I would like to move my Jenkins data files (specifically the \\jobs directory) from the default installation directory
Another possibility is to move the entire contents of $JENKINS_HOME.
It does not require editing configuration files, and it preserves the build history.
Stop the running service: jenkins.exe stop
Uninstall the service: jenkins.exe uninstall
Copy C:\Jenkins\home to F:\Jenkins\home
Rename C:\Jenkins to something else, keep it as backup.
Go to F:\Jenkins\home
Reinstall the service: jenkins.exe install
Start Jenkins: jenkins.exe start
Enjoy the new disk space!