Using the control panel to perform a slow boot

Learn how to use the control panel to perform a slow boot.

In some cases, you need to perform a slow-mode boot in order to perform extended diagnostic testing.
Note: A slow-mode boot might yield a new reference code on the control panel, or new errors in the service processor error log. When the server reports a new error code, record it for use in subsequent steps.
  1. Record any reference codes appearing on the control panel. For details, see Collecting reference codes and system information.
  2. Stop the operating system by performing the following steps:
    1. Log in to the system as a user with the authority to run the shutdown or pwrdwnsys (Power Down System) command.
    2. At the command line, enter one of the following commands:
      Note: These commands stop the operating system. The system power turns off, the power-on light begins to slowly blink, and the system goes into a standby state.
      • If your system is running AIX®, type shutdown
      • If your system is running IBM® i5/OS®, type pwrdwnsys *immed
      • If your system is running Linux®, type shutdown -h now
  3. On the control panel, use the increment or decrement buttons to scroll to function 02.
  4. Press Enter to start function 02. The current IPL type (with pointer) and speed is displayed.
  5. Use the increment or decrement buttons to scroll through the IPL types and speeds.
  6. When manual is shown, press Enter to select the IPL type of manual. The current IPL type and speed (with pointer) is displayed.
  7. Use the increment or decrement buttons to scroll through the IPL speeds.
  8. When S is shown, press Enter to select the IPL speed of slow.
  9. To exit function 02, press Enter multiple times until just 02 is displayed.
  10. Power on the server by pressing the white power button. Then return to the procedure that caused you to perform a slow boot. This ends the procedure.
Parent topic: Performing a slow boot
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