Recovering the vital product data information if the partition does not IPL in A-mode or B-mode

The vital product data (VPD) information contains information about the disk unit which is the load-source disk unit.

1. Enter Option 8 (Update system vital product data) on the Work with Disk Units display. The following confirmation displays:

                    Update system vital product data  
   
   The disk unit information below identifies the load source whose 
   location will be written to the system vital product data.
   
   Press enter to confirm the vital product data should be written.               
   
                Serial 
   ASP   Unit   Number       Type    Model   
     1      1   $$$$$$$$$$   $$$$    $$$

   The load-source disk unit is identified in the display above.
2. Press Enter to update the VPD.
3. Press F3 to return to the Use Dedicated Service Tools (DST) menu.
4. On the Use Dedicated Service Tools (DST) menu, select option 7 (Start a service tool).
5. On the Start a Service Tool menu, select option 7 (Operator panel functions) .
6. On the Operator Panel Functions display, select the IPL source and IPL mode. Press F8 to restart the partition or press F10 to power off the partition.

                      Operator Panel Functions 
                                                               System:   XXXX      
    IPL source:  2   (1=A, 2=B or 3=D)                                             
    IPL mode:    1   (1=Manual, 2=Normal, 3=Secure or 4=Auto)                      
                                                                                   
    Press Enter to change the IPL attributes and return                            
      to the main DST menu.                                                        
    Press F8 to set the IPL attributes and restart the system.                     
      Machine processing will be ended and the system will be                      
      restarted.                                                                   
    Press F10 to set the IPL attributes and power off the system.                  
      Machine processing will be ended and the system will be                      
      powered off.                                                                 
    Press F12 to return to the main DST menu without changing                      
      IPL attributes.