The DB2 Setup wizard requires the next CD (or installation image) before the install process can continue. The required CD title is displayed on the CD prompt window.
Get the CD as displayed on the CD prompt window and place the CD in your CD drive and ensure the drive is mounted. Alternatively, you can copy the CD to a file system on a network or local drive. Next, identify the location of the CD or installation image by typing the path in the Location field or by navigating to the directory using [...].
For more information about combining installation images, see http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/topic/com.ibm.db2.luw.qb.server.doc/doc/c0022583.html