3.2.5.2.1 Sending a Client Device List Announce Message

The client MAY choose to send announce messages for each file system individually, all in one packet, or mixed with other devices. In all cases, the packet SHOULD start with a standard header, as specified in section 2.2.3.1; and the DeviceType in each announce sub-packet MUST be set to RDPDR_DTYP_FILESYSTEM.<13> The client MAY choose to send this packet if a new file system appears at any time, according to the rules defined in section 3.2.5.1.9.