General Description 2-33

POST Execution Flow

The following describes the progress of POST in the chronological order.

IMPORTANT:

„Do not make key entries or perform mouse operations while POST is in progress.

„Some system configurations may display the message "Press Any Key" to prompt a key entry. This message is driven by BIOS of an installed optional board. Make sure to read the manual that comes with the optional board before any key entry.

„Powering on the server, after you installed or removed an optional PCI board or moved it to another slot, may display the message that indicates incorrect board configuration and suspend POST.

In such a case, press F1 to continue POST. Board configuration can be made using the utility described later.

1.After a few seconds from power-on, POST starts checking the memory. The count message 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 size of the server. Also, it may take approximately one minute for the screen display to appear after rebooting the server.

2.Some messages appear upon completion of the memory check. These messages appear to indicate that the system has detected the CPU, keyboard, and mouse.

3.POST then detects the internal SCSI controller and display the message prompting you to launch the SCSI device utility. (Ignore the message. POST will automatically proceed a few seconds later.)

Press <Ctrl> <A> for SCSISelect(TM) Utility!

To launch the SCSI device utility, press Ctrl and A. See Chapter 4 for setup and parameters.

You need to use the SCSI device utility in the following cases:

–When new SCSI device is installed in a backup device bay.

–When an external SCSI device connection is changed.

–When the internal SCSI device connection is changed.

–When the internal hard disk drives are configured with HostRAID.

The server automatically restarts POST all over again when you exit the SCSI device utility.

If the system drive is to be connected to a RAID controller, connect it to the PCI slot that has a highest boot priority than the PCI slots connected with the other RAID controller. Refer to "PCI Board" in chapter 9 for the boot order for the RAID controller.