HP OpenVMS 8.x manual Performing a Conversational Interactive Boot

2.Boot the system disk manually by entering the following command at the EFI Shell prompt, where fsn: (such as fs1:) is the device associated with the system disk:

Shell> fsn:\efi\vms\vms_loader.efi

You must either specify the full path (as shown in this example) or start the system loader from the \efi\vms directory. For more information, see Section A.3.1 (page 162).

A.6.8 Performing a Conversational (Interactive) Boot

A conversational boot is most commonly used in research and development environments and during software upgrades. Perform a conversational boot to stop the boot process before it completes. The boot process stops after it loads SYS$SYSTEM:SYSBOOT.EXE and displays the SYSBOOT> prompt. At the SYSBOOT> prompt, you can enter specific OpenVMS System Generation utility (SYSGEN) commands to do the following:

•Examine system parameter values

•Change system parameter values

•Specify another parameter file

•Specify another system startup command procedure

•Select the default system parameter file (IA64VMSSYS.PAR) if you modified system parameters to values that render the system unbootable

•Specify a minimum startup

There are several ways to perform a conversational boot. The following procedure is the most direct:

IF ...	THEN GO TO...
The OpenVMS I64 operating system is running.	Step 1
The OpenVMS I64 operating system is not running.	Step 4

1.Log in to the SYSTEM account.

2.Enter the following command: $ @SYS$SYSTEM:SHUTDOWN

3.Answer the questions displayed by the system. When the procedure asks whether an automatic reboot should be performed, press Enter for NO. When the procedure is finished, it displays the following message:

SYSTEM SHUTDOWN COMPLETE

4.Halt the system or nPartition. (See Section A.7 (page 184) for more information about how to halt your Integrity server).

5.Begin the conversational boot by entering the following command at the EFI Shell prompt, where fsn: is the device (such as fs1:) associated with the system disk:

Shell> fsn:\efi\vms\vms_loader.efi -flags 0,1

6.At the SYSBOOT> prompt, you can enter any of the SYSGEN commands listed in Table A-2. For more information about these SYSGEN commands, see the HP OpenVMS System Management Utilities Reference Manual: M-Z.

7.When you finish using the SYSGEN commands, enter the CONTINUE command to complete the boot process.

Table A-2 SYSGEN Commands Used in the SYSBOOT Procedure

Command	Description
CONTINUE	Resumes the boot procedure.
DISABLE CHECKS	Inhibits checking of parameter values specified with the SET command.
ENABLE CHECKS	Permits checking of parameter values specified with the SET command.

A.6 Booting Operations 179