Some docs claimed that values in certain config files would be
overwritten, when they would actually be overridden.
Override: a file is not modified but its contents are superseded by
something else. (configurations set in
/etc/dracut.conf.d/*.conf override configurations set in
/etc/dracut.conf)
Overwrite: a file is modified or its contents replaced by an action
(use dracut --force to overwrite the existing initramfs)