Manage System z cluster IPL attributes

For IPL operations for CPCs configured in a System z cluster, you can:

• Display the IPLADDR and IPLPARM attribute values of the last and for the next IPL.
• Modify IPLADDR and IPLPARM attribute values to be used for next IPL.

Perform the following steps:

1. On the Primary Task Selection panel, select Activate or process configuration data and from the resulting panel, select Build and manage System z cluster IOCDSs, IPL attributes and dynamic I/O changes. The System z Cluster List is displayed (see Figure 93).
2. On the System z Cluster List select the CPCs for which you want to view and modify IPL attributes.
3. Select the Work with IPL attributes action from the context menu (or action code  i ). HCD displays the IPL Attribute List.

   *---------------------- IPL Attribute List ------------------------------------*
   |                                                                              |
   |                              IPL Attribute List      Row 1 of 6 More:       >|
   |Command ===> _______________________________________________ Scroll ===> PAGE |
   |                                                                              |
   |                                                                              |
   |Update the values to be used for the next IPL and press Enter. To view the    |
   |values used for the last IPL, scroll to the right.                            |
   |                                                                              |
   |                             ----------------Next IPLPARM------------------   |
   |Processor  Partition  IPL    IODF  LOADxx  Prompt/Msg  Nucl     Unformatted   |
   |ID         Name       ADDR   Dev   Suffix  Option      Suffix   IPLPARM       |
   |                                                                              |
   |H05        LIN1       4800   1     __      _           _        1             |
   |H05        LIN2       4801   ____  __      _           _        _______       |
   |H05        BVM1       A140   0EA0  __      _           _        0EA0          |
   |H05        COM1       1A00   1A10  F1      _           _        1A10F1        |
   |H05        COM2       1A01   1A10  FA      A           2        1A10FAA2      |
   |H05        AVM4       A100   CONS  SY      S           G        CONSSYSG      |
   | *************************** BOTTOM OF DATA *******************************   |
   |                                                                              |
   *------------------------------------------------------------------------------*

   The IPL Attribute List displays the IPLADDR and IPLPARM attribute values for all selected processor definitions and their partitions that are obtained from the support element of the associated CPCs.

4. On the IPL Attribute List, view or modify the attribute values for IPLADDR and IPLPARM.

   Use F20=Right to move the screen to the right to view the IPL attributes used for the last IPL.

   The IPL ADDR column shows the LOAD address used for next IPL.

   The Next IPLPARM column shows the LOAD parameter used for z/OS and is a concatenation of the following attributes: IODF Device, LOADxx Suffix, Prompt/Message Option, and Nucleus Suffix. An additional column shows unformatted IPL parameters. You can use these unformatted values to specify non z/OS IPL parameters, for example, for z/VM or Linux on System z for the next IPL. This unformatted string can be up to eight characters long. HCD does not perform any semantic checks of these values, as the content depends on the operating system for which they are used.

   When providing input to the unformatted IPL parameters, you must specify the value at the correct position in the string. For non-specified leading or intermediate characters, use a period (.) instead of a blank, since blanks are removed by ISPF.

   You cannot type values into both the left four columns and the right Unformatted column of Next IPLPARM. If you provide values into the Unformatted column, they are transferred into the left four columns.

   The IPL ADDR and/or the Next IPLPARM values for the next IPL are taken, when 'Use dynamically changed IPL address' and/or 'Use dynamically changed IPL parameter' are selected on a LOAD profile that is used to initiate an IPL, or to activate an operating system. This enables you to change the values of IPLADDR and IPLPARM without updating the profile.