On systems with a volume directory, the ??RV (Restart Volume Directory) command causes a new volume directory to be started after the next halt/load. The old volume directory is erased during the halt/load. The system stores volume directory information on the DL CATALOG family in either the SYSTEM/ACCESS or SYSTEM/CATALOG directory depending on the OP CATALOGING setting.
Syntax

Explanation
The ??RV command tells the system to start a new volume directory after the next halt/load.
Considerations for Use
At the next halt/load, the system verifies that a new volume directory is still needed before starting it.