IPL types and modes; Front Panel Keys Configuration

The IPL types and modes are:
 A M       Performs a Manual IPL from the A side of the disk.  This mode may be

              used when applying or removing Licensed Internal Code (LIC) PTFs.

              It can also be used to power off the system.
              Use this type and mode only under the direction of your support

              representative.
  A N       Performs a Normal IPL from the A side of the disk.
              This mode should only be used when B N does not work and you are

              told to do so by your support representative.
  B M       Performs a Manual IPL from the B side of the disk.  This mode should

              only be used when an attended IPL must be performed or you need to

              power off the system.  This type of IPL is used when you need to change

              the system date and time permanently.
  B N       Performs a normal IPL from the B side of the disk.  This is the type

              and mode used most of the time.  It is also the mode the system must

              be in if you want to do an unattended IPL.
  C M       Allows service representatives to perform a special IPL.  This mode

              is for use only by service representatives.  Never IPL in this type

              and mode.
  C N       Allows service representatives to perform a special IPL.  This mode

              is for use only by service representatives.  Never IPL in this type

              and mode.
  D M       Performs a manual IPL from either CD-ROM or tape.  This mode is used

              to install Licensed Internal Code and the OS/400 operating system in

              attended mode.  This is the most often used IPL type and mode for

              installation.
  D N       Performs a normal IPL from either CD-ROM or tape.  This mode is used

              to install Licensed Internal Code and the OS/400 operating system in

              unattended mode.
  Manual    When the mode is set to Manual (M), the system allows you to do all

               manual IPLs, such as an operator-attended IPL from disk, CD-ROM or tape.

               Manual mode also allows you to do some manual control functions, such

               as selecting an IPL type and mode or displaying the kind of IPL that

               the system is set to run. However, in manual mode, you cannot do a

               remote IPL, an IPL by date and time, or an IPL after a power failure.
               Note:  You should set the mode to Manual only when it is necessary.

               This ensures that no one accidentally presses the Power pushbutton

               and causes the system to stop.
  Normal    The Normal mode allows you to turn the power on and then automatically

               start the system in any of the following ways:
               IPL remotely
               IPL by date and time
               IPL after a power failure
            Note:  Your system should be in Normal mode most of the time.