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System Startup, Configuration, and Shutdown Reference Manual: HP e3000 MPE/iX Computer Systems > Chapter 2 Initiating System Activity
The Booting Process |
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The process of booting the processor-dependent code (PDC) and the input/output-dependent code (IODC) takes place immediately after the system self-test. The initialization process is hardware-driven and begins automatically. After the system is reset, the PDC and IODC boot sequence messages indicate or prompt for the I/O paths required for successful completion. For more information on proper I/O paths for startup, refer to the previous section. Autobooting allows you to boot the system from the primary boot path without the need to make any keyboard entries. Boot messages vary slightly depending on whether autoboot is enabled. The following examples show some typical boot sequences and illustrate use of the material covered up to this point (resetting the system, system self- test, and using I/O paths). Autobooting a system is usually accomplished by enabling autoboot with the ISL AUTOBOOT command, resetting the system, and following the system's prompts. For information on the AUTOBOOT command, refer to Chapter 3 “System Startup Functions” Even when autoboot is disabled (or you have interrupted an enabled autoboot sequence as described in the next section), the system still allows you the option of autobooting by issuing an Interact with IPL (Y or N)?> message. (Bypassing a disabled autoboot flag setting to autoboot a system is discussed later in this chapter.) Example 2-3 demonstrates autobooting an N-Class system. The example is a partial listing of an uninterrupted autoboot (autoboot enabled) sequence. The screen may contain a different boot path display and additional information, depending on the system you are using. Example 2-3 Autobooting an N-Class System
In Example 2-5, autoboot must be turned on, and an autoboot file (also known as an autoexecute file) must reside in the logical interchange format (LIF) directory for ISL to autoboot. If not, you get the message Cannot find an autoexecute file. AUTOBOOT ABORTED. For information on turning on autoboot, refer to Chapter 3 “System Startup Functions” For information on replacing autoboot files using SYSGEN, refer to Chapter 8 “Modifying System File Configurations” Even with the autoboot sequence in effect, you can override it to select an alternate boot medium (for example, a tape drive or another disk drive), to activate a different ISL utility, or to enter a different set of options. This is accomplished by pressing any key within 10 seconds after receiving the message that autoboot has been enabled. Example 2-4 provides a partial listing of an interrupted autoboot sequences for an N-Class system. Other systems may display different messages and boot paths. Example 2-4 Interrupting Autobooting an N-Class System. TCExecution of this command irrecoverably halts all system processing andI/O activity and restarts the computer system.Type Y to confirm your intention to restart the system: (Y/[N]) yy -> SPU hardware was successfully reset.. . . . Processor Speed State CoProcessor State Cache Size Number State Inst Data --------- -------- --------------------- ----------------- ------------ 1 540 MHz Active Functional 512 KB 1 MB 3 Unknown Stopped:Deconfigured Unknown 512 KB 1 MB Central Bus Speed (in MHz) : 133 Available Memory : 2097152 KB Good Memory Required : Not initialized. Defaults to 32 MB. Primary boot path: 0/0/2/0.6 Alternate boot path: 0/0/1/0.6 Console path: 0/0/4/0.0 Keyboard path: 0/0/4/0.0Processor is booting from first available device.To discontinue, press any key within 10 seconds. <press key.Boot terminated.---- Main Menu --------------------------------------------------------------- Command Description ------- ----------- BOot [PRI|ALT|<path>] Boot from specified path PAth [PRI|ALT] [<path>] Display or modify a path SEArch [DIsplay|IPL] [<path>] Search for boot devices COnfiguration menu Displays or sets boot values INformation menu Displays hardware information SERvice menu Displays service commands DIsplay Redisplay the current menu HElp [<menu>|<command>] Display help for menu or command RESET Restart the system----Main Menu: Enter command or menu > boInteract with IPL (Y, N, or Cancel)?> yBooting...Boot IO Dependent Code (IODC) revision 1SOFT Booted.:<ctl-B>GSP Host Name: csyprel18(csysas18)GSP> tcInteract with IPL (Y, N, or Cancel)?> yBooting...Boot IO Dependent Code (IODC) revision 1SOFT Booted.MMSAVE Version 2.5DUMPAREA found, save main memory to discISL loadedISL Revision A.00.38 OCT 26, 1994ISL>ISL> help HELP Help Facility LS List ISL utilities AUTOBOOT Set or clear autoboot flag in stable storage AUTOSEARCH Set or clear autosearch flag in stable storage PRIMPATH Modify primary boot path in stable storage ALTPATH Modify alternate boot path in stable storage CONSPATH Modify system console path in stable storage DISPLAY Display boot and console paths in stable storage LSAUTOFL List contents of autoboot file FASTSIZE Sets or displays FASTSIZE 800SUPPORT Boots the s800 Support Kernel from the boot device 700SUPPORT Boot the s700 Support Kernel from the boot device READNVM Displays contents of one word of NVM READSS Displays contents of one word of stable storage LSBATCH List contents of batch file BATCH Execute commands in batch file LSEST List contents of EST (Extended Self Test) file EST Execute commands in EST (Extended Self Test) fileEnter 'LS' to see a list of the ISL utilities.ISL> When the sequence is interrupted, you are asked to select whether the system should boot from the primary system disk or from a system load tape on the alternate boot path. A third prompt allows you to enter a different boot path interactively. As another option, if you enter a "?" at the Enter boot path, command, or ? prompt, you see a menu of boot command options. The menu and boot command options can differ depending on your system. Example 2-5 shows the menu for an N-Class System. Example 2-5 Boot Command Options for an N-Class System ---- Main Menu --------------------------------------------------------------- Command Description ------- ----------- BOot [PRI|ALT|<path>] Boot from specified path PAth [PRI|ALT] [<path>] Display or modify a path SEArch [DIsplay|IPL] [<path>] Search for boot devices COnfiguration menu Displays or sets boot values INformation menu Displays hardware information SERvice menu Displays service commands DIsplay Redisplay the current menu HElp [<menu>|<command>] Display help for menu or command RESET Restart the system----Main Menu: Enter command or menu > If you enter an improper boot path, forget to place the boot device online, or if the disk or tape medium is defective, the system displays a boot device status along with one or more four-character boot error codes on the system console. Example 2-6 demonstrates a system's possible response to an improper boot path. Example 2-6 A System's Response to an Improper Boot Path GSP> tcTCExecution of this command irrecoverably halts all system processing andI/O activity and restarts the computer system.Type Y to confirm your intention to restart the system: (Y/[N]) yy -> SPU hardware was successfully reset.GSP Host Name: csyprel18(csysas18)GSP>********** VIRTUAL FRONT PANEL **********System Boot detected*****************************************LEDs: RUN ATTENTION FAULT REMOTE POWER FLASH FLASH OFF ON ONplatform config 626Fprocessor test 1142. . . processor test 1142platform test 612AI/O config 8238***************************************************** EARLY BOOT VFP *************End of early boot detected*****************************************Firmware Version 21.32Duplex Console IO Dependent Code (IODC) revision 1------------------------------------------------------------------------------ (c) Copyright 1995-2000, Hewlett-Packard Company, All rights reserved------------------------------------------------------------------------------ Processor Speed State CoProcessor State Cache Size Number State Inst Data --------- -------- --------------------- ----------------- ------------ 1 540 MHz Active Functional 512 KB 1 MB 3 Unknown Stopped:Deconfigured Unknown 512 KB 1 MB Central Bus Speed (in MHz) : 133 Available Memory : 2097152 KB Good Memory Required : Not initialized. Defaults to 32 MB. Primary boot path: 0/0/2/0.6 Alternate boot path: 0/0/1/0.6 Console path: 0/0/4/0.0 Keyboard path: 0/0/4/0.0---- Main Menu --------------------------------------------------------------- Command Description ------- ----------- BOot [PRI|ALT|<path>] Boot from specified path PAth [PRI|ALT] [<path>] Display or modify a path SEArch [DIsplay|IPL] [<path>] Search for boot devices COnfiguration menu Displays or sets boot values INformation menu Displays hardware information SERvice menu Displays service commands DIsplay Redisplay the current menu HElp [<menu>|<command>] Display help for menu or command RESET Restart the system----Main Menu: Enter command or menu > bo 8.2.4Interact with IPL (Y, N, or Cancel)?> yBooting...Not a Valid Boot Path.************* SYSTEM ALERT **************SYSTEM NAME: csyprel18(csysas18)DATE: 09/15/1999 TIME: 19:25:29ALERT LEVEL: 15 = Fatal hardware or configuration problem prevents operationREASON FOR ALERTSOURCE: 8 = I/OSOURCE DETAIL: 6 = disk SOURCE ID: 0PROBLEM DETAIL: 3 = functional failureLEDs: RUN ATTENTION FAULT REMOTE POWER FLASH FLASH OFF ON ON0x000010F386001480 00000000 00000000 - type 0 = Data Field Unused0x580018F386001480 00006308 0F13191D - type 11 = Timestamp 09/15/1999 19:25:29A: ack read of this entry - X: Disable all future alert messagesAnything else skip redisplay the log entry->Choice:->Choice:a*****************************************<hang....>ctl-b, tc to get back to bch prompt..........] An N-Class system was used in example 2-6. Other HP e3000 systems perform similarly, although their boot paths may be different from the example shown. For an explanation of boot error codes, refer to MPE/iX Error Message Manual Volumes I, II, and III. The message Interact with IPL (Y or N)? gives you an additional chance to autoboot even if you previously indicated an autoboot override (or have autoboot disabled). Answering NO to the Interact message returns the system to attempt an autoboot. Interactively booting the system with autoboot disabled allows you to select a particular boot path or to activate ISL from the keyboard. The initial interactive sequence is similar to the initial autoboot sequence, except in the interactive sequence, the system does not prompt the user with the option to override the process. Example 2-7 demonstrates the interactive boot sequence for an N-Class system. The screen display may contain a different boot path and additional information, depending on the system you are using.
CM> SP Example 2-7 Interactively Booting an N-Class System GSP> tcTCExecution of this command irrecoverably halts all system processing andI/O activity and restarts the computer system.Type Y to confirm your intention to restart the system: (Y/[N]) yy -> SPU hardware was successfully reset.GSP Host Name: csyprel18(csysas18)GSP>********** VIRTUAL FRONT PANEL **********System Boot detected*****************************************LEDs: RUN ATTENTION FAULT REMOTE POWER FLASH FLASH OFF ON ONplatform config 626Fprocessor test 1142processor test 1100. . .platform test 612AI/O config 8238***************************************************** EARLY BOOT VFP *************End of early boot detected*****************************************Firmware Version 21.32Duplex Console IO Dependent Code (IODC) revision 1------------------------------------------------------------------------------ (c) Copyright 1995-2000, Hewlett-Packard Company, All rights reserved------------------------------------------------------------------------------ Processor Speed State CoProcessor State Cache Size Number State Inst Data --------- -------- --------------------- ----------------- ------------ 1 540 MHz Active Functional 512 KB 1 MB 3 Unknown Stopped:Deconfigured Unknown 512 KB 1 MB Central Bus Speed (in MHz) : 133 Available Memory : 2097152 KB Good Memory Required : Not initialized. Defaults to 32 MB. Primary boot path: 0/0/2/0.6 Alternate boot path: 0/0/1/0.6 Console path: 0/0/4/0.0 Keyboard path: 0/0/4/0.0---- Main Menu --------------------------------------------------------------- Command Description ------- ----------- BOot [PRI|ALT|<path>] Boot from specified path PAth [PRI|ALT] [<path>] Display or modify a path SEArch [DIsplay|IPL] [<path>] Search for boot devices COnfiguration menu Displays or sets boot values INformation menu Displays hardware information SERvice menu Displays service commands DIsplay Redisplay the current menu HElp [<menu>|<command>] Display help for menu or command RESET Restart the system----Main Menu: Enter command or menu > boInteract with IPL (Y, N, or Cancel)?> yBooting...Boot IO Dependent Code (IODC) revision 1SOFT Booted. In this example, the system halts at ISL and then waits for the operator to issue an ISL command. For more information on ISL and ISL utilities, refer to Chapter 3 “System Startup Functions” Answering NO to the prompt Interact with IPL (Y or N)? causes the system to ignore a disabled autoboot flag setting and attempt to autoboot. Example 2-10 demonstrates bypassing a current disabled autoboot flag setting in order to autoboot. Example 2-8 Bypassing the Disabled Autoboot Setting When Booting a System
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