HCD and Input/Output definition files

The specified values of the hardware configuration definition (HCD) files must be updated for migrating volumes containing Input/Output Definition Facility (IODF) files before the next initial program load (IPL).

• Load Parameter Definition – You can change this value by using the Operator Control (OPRCTL) frame, or the System Control (SYSCTL) frame.
• Load Profile(s) – For CMOS mainframes.
• JES3 Initialization Stream Checker – Using the Create JES3 INISH Stream Checker Data window.

It is your responsibility to ensure that the new device address, or addresses, be communicated to the appropriate areas before the next IPL. Failure to do so might result in a Wait State during IPL. TDMF issues a warning message when an IODF or load-parms volume is migrated.

For more information, see the z/OS HCD User's Guide (SC33-7988).