C

D

Device Tree

the device tree contains information about the devices present on the system. The OS builds this tree when the machine boots, using information from drivers and other components, and updates the tree as devices are added or removed.

Devnode

a devnode is an internal structure that represents a device on the system. There's a devnode for each device on the machine and the devnodes are organized into a hierarchical device tree. The PnP Manager creates a devnode for a device when the device is configured. On Windows 2000/XP, a devnode contains the device stack (the device objects for the device's drivers) and information about the device such as whether the device has been started and which drivers have registered for notification on the device.