Changing operating modes and IPL types

By changing IPL types, you can perform an initial program load (IPL) from the load-source media or from an alternate load source media. With this operation, you can apply fixes (PTFs). By changing the operating mode, you have several options in controlling the IPL.

Changing the IPL type and the operating mode for systems with a keystick

To change the IPL type and the operating mode for systems with a keystick, follow these steps:

Insert the keystick.
Use the Mode button to scroll through the four operating modes (Manual, Normal, Secure, and Auto) and select the Manual mode.
Note: An indicator light on the control panel shows the active mode.
Use the Increment or Decrement button to select function 02 (only available in Manual mode), and press the Enter button.
Use the Increment or Decrement button to select the required IPL type (A, B, C, or D) and press the Enter button.

Changing the IPL type and the operating mode for systems without a keystick

To change the IPL type and the operating mode for systems without a keystick, follow these steps:

Use the Increment or Decrement button to select function 02, and press the Enter button.
Use the Increment or Decrement button to select the required IPL type (A, B, C, or D) and the operating mode (either M=manual or N=normal), and press Enter.
Note: The control panel displays both the IPL type and the operating mode. For example, B_N indicates a B type IPL in a normal mode.