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Container IDs Generated from the Removable Device Capability

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Starting with Windows 7, if a bus driver cannot provide a container ID for a device node (devnode) that it is enumerating, the Plug and Play (PnP) manager uses the removable device capability to generate a container ID for all devnodes enumerated for the physical device. The bus driver reports the removable device capability in response to an IRP_MN_QUERY_CAPABILITIES request.

This section contains the following topics:

Overview of the Removable Device Capability

How Container IDs are Generated from the Removable Device Capability