Recovering from IPL or system failures

Use this procedure to help recover from IPL or system failures for i5/OS®.

Verify the following:
  • The device from which you performed the IPL (initial program load) is started.
  • The tape and CD are inserted correctly.
  • The sign-on user ID and password are correct.
  • The system is set to the correct mode (Manual, Normal, Auto, or Secure).
  • If this is a timed IPL, the system value for date/time and control panel mode is set correctly.
  • If this is a remote IPL, the telephone, modem, control panel mode, and QRMTIPL system value are set up correctly.

Perform the following steps to recover from an IPL or system failures:

  1. Follow these steps to perform an IPL from the control panel or Operations Console Remote Control panel:
    1. Set the system to the Manual mode.
    2. Choose from the following:
      • If the system is turned on, select function 03 and press Enter to start an IPL.
      • If the system is shut off, ensure that the control panel is in either Normal or Manual mode and press the power-on button.
  2. Choose from the following options:
    • If you see the Sign On display, sign onto the system, and continue with step 3.
    • If you do not see the Sign On display, do you have a new reference code?
  3. On the IPL Options display, specify Yes for the following parameters:
    • Define or change the system at IPL
    • Clear output queues
    • Clear job queues
    • Clear incomplete job logs
  4. Change the system value for QMCHPOOL to a smaller value.
  5. Make sure the system value for QCTLSBSD has the correct spelling, or assign an alternative controlling subsystem.
  6. Change the system value for QPWRDWNLMT to a larger value.
  7. Continue the IPL process.
If the same failure occurs, set the system to the Normal mode, and then contact your next level of support or your hardware service provider.