You must comply with the following items before upgrading or installing
your software (i5/OS, Licensed
Internal Code) to V5R4:
Important: When you restart
your server and a console was not previously specified, you receive two additional
windows to confirm the setting of the console type. At the first window, press
F10 to accept the current console type. The second window displays that a
console type value did not previously exist (a zero is present for the old
value) and displays the new console type value. Press Enter to exit and set
the console type automatically. The next window displayed is Install
the System. This condition can happen on your first manual IPL
of V5R4, for example, during the A-mode IPL following the restore of Licensed
Internal Code during the upgrade or installation when a console value of zero
is found.