2-22 General DescriptionPOST Execution FlowThe following describes the progress of POST in the chronological order.IMPORTANT: Do not power off the server while POST is in progress. Do not make key entries or perform mouse operations while POSTis in progress. Some system configurations may display the message "Press AnyKey" to prompt a key entry. This message is driven by BIOS of aninstalled optional board. Make sure to read the manual that comeswith the optional board before any key entry. Powering on the server, after you installed or removed an optionalPCI board or moved it to another slot, may display the message thatindicates incorrect board configuration and suspend POST.In such a case, press F1 to continue POST. Board configuration canbe made using the utility described later.1. After a few seconds from power-on, POST starts checking the memory. The countmessage of the basic and expansion memory appears at top left on the display unit screen.The memory check may takes a few minutes to complete depending on the memory sizeof the server. Also, it may take approximately one minute for the screen display to appearafter rebooting the server.2. Some messages appear upon completion of the memory check. These messages appear toindicate that the system has detected the CPU, keyboard, and mouse.3. After a while, POST displays messages prompting you to launch the utilities for LANcontrollers on mother board. You need not launch the utility. (Ignore the message. POSTwill automatically proceed.)4. POST detects Internal RAID Controller, and displays the following message promptingyou to launch the WebBIOS Setup utility.Press for WebBIOSPress Ctrl + H on POST screen to run WebBIOS. See Chapter 4 for setup and parameters.When you exit from the utility, you are prompted to reboot the system. Press Ctrl + Alt +Delete. The server restarts POST all over again.5. POST displays ID numbers of SAS devices connected to the server.