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6.6. Kernel device, module loading, and hotplug changes

The hotplug and device handling subsystem has undergone significant changes in Fedora Core. The udev method now handles all module loading, both on system boot and for hotplugged devices. The hotplug package has been removed, as it is no longer needed.
Support for hotplug helpers via the /etc/hotplug, /etc/hotplug.d, and /etc/dev.d directories is deprecated, and may be removed in a future Fedora Core release. These helpers should be converted to udev rules. Please see http://www.reactivated.net/writing_udev_rules.html for examples.