B.6.9 booting with minimum startup, B.6.10 booting with the xdelta utility (xdelta) – HP BA322 90087 User Manual

Page 219

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Table B-2 SYSGEN Commands Used in the SYSBOOT Procedure (continued)

Description

Command

Permits checking of parameter values specified with the SET command.

ENABLE CHECKS

Displays a summary of the SYSBOOT commands on the terminal screen.

HELP

Establishes the value of a system parameter.

SET parameter-name

Sets the name of the system startup command procedure.

SET/STARTUP

Displays active, current, default, maximum, and minimum values for specific
parameters. (Use qualifiers to display characteristics of parameters grouped
by categories.)

SHOW [parameter]

Specifies a parameter file to be used as a source of values. You must enter the
entire file specification, including device and directory; you cannot specify a
logical name.

USE [file-spec]

Specifies that default values be used for all parameters.

USE DEFAULT

For examples of conversational booting, see

Section B.6.9 (page 219)

and

Section B.6.12 (page 220)

.

B.6.9 Booting with Minimum Startup

In certain cases, you might want to boot your system without performing the full sequence of
startup events. For example, if a startup event prevents you from logging in, you might want to
boot the system without executing the startup so that you can log in and fix the problem. You
can use the conversational boot to specify a minimum startup.

NOTE:

Because this procedure bypasses specific startup operations, it does not autoconfigure

the system's peripheral devices.

Boot the system with minimum startup as follows:
1.

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 and the system root
is [SYS0...]:

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

2.

Enter the following command:

SYSBOOT> SET STARTUP_P1 "MIN"

3.

Enter the following command to ensure that the operating system does not record for
subsequent system reboots the STARTUP_P1 parameter change you made in step 2:

SYSBOOT> SET WRITESYSPARAMS 0

4.

Enter the following command to continue booting:

SYSBOOT> CONTINUE

B.6.10 Booting with the XDelta Utility (XDELTA)

The XDelta utility (XDELTA) is a debugging tool that system programmers use. The procedure
for booting all Integrity servers with XDELTA is the same.
The following table describes the valid values you can specify when booting with XDELTA:

System Response

Value

Normal, nonstop boot (default).

0

Begins a conversational boot and then displays the SYSBOOT prompt.

1

Includes XDELTA but does not take the initial breakpoint.

2

B.6 Booting Operations

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