Changing your system IPL from the control panel

 

You can specify the type of initial program load (IPL) you need to perform from the system control panel. The Increment/Decrement buttons are used to change the IPL type and mode on systems without a mode button. Use Function 02 to select the IPL type (A, B, or D) and mode (normal or manual). To select IPL type and mode from the control panel, follow these steps:

1. Use the Increment/Decrement buttons to select Function 02, and press Enter.

2. Use the Increment/Decrement buttons to select the IPL type and mode you want, and then press the Enter button to save.

3. Optional: To specify a fast or slow IPL that can only be set one time at the console panel when the system is turned off, follow these steps:

   1. Select Function 02 and press Enter twice.

   2. Use the Increment/Decrement buttons to select F (Fast), S (Slow), or V (Value from IPL attributes).

The Hardware diagnostics IPL attribute determines the type of subsequent IPLs. *MIN is the preferred setting. However, if you anticipate any hardware problems, specify *ALL on the Hardware diagnostics parameter. Use the Change IPL Attributes (CHGIPLA) command to change the IPL attribute.

• IPL type
  The IPL type determines which copy of programs your system uses during the initial program load (IPL).

• Operating mode of an IPL
  The operating mode determines the number of options that are presented to the operator for consideration during and after the initial program load (IPL). It can also secure (lock) the control panel to prevent an unauthorized or inadvertent IPL from the control panel.

• 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 system values during IPL
  System values control information that affects the operation of certain parts of the system. On the System Value Commands display, you can change system values that affect initial program load (IPL) or other areas of the system.

 

Parent topic:

Starting the system

Related concepts
Control panel

Related tasks
Restarting and powering down a system with logical partitions