The following sections describe different methods
of booting your OpenVMS Alpha system.
A.1.1 Booting the OpenVMS Alpha Operating System CD
If you need to boot the OpenVMS Alpha operating
system CD, either to perform an installation or upgrade or to perform
related operations such as mounting or backing up the system disk,
perform the steps in the following sections, depending on whether
you are booting locally or from the InfoServer.
A.1.1.1 Booting from the Local Drive
Boot from the local drive as follows:
Insert
the operating system CD into the local CD drive.
At
the console prompt (>>>), enter the SHOW DEVICE command so you can
identify the name of the CD drive (for example, DKA400:)
Enter
the boot command in the following format:
BOOT -FLAGS 0,0 source-drive
Substitute the device name of the CD drive (as
listed in the SHOW DEVICE display) for source-drive.
For example, if the SHOW DEVICE display lists
the device name of your CD drive as DKA400, enter the following command
and press Enter:
>>> BOOT -FLAGS 0,0 DKA400
After you boot, the system displays a menu from
which you can choose options to perform the following tasks:
Install or upgrade the
operating system using the PCSI utility.
Enter a DCL environment
from which you can perform preinstallation or maintenance tasks such
as mounting or showing devices and backing up or restoring files on
the system disk.
Shut down the system.
A.1.1.2 Booting from the InfoServer
To boot the operating system CD using either the
InfoServer hardware or the InfoServer utility, follow these steps.
To use the InfoServer utility, certain configuration steps are required
initially (one time only), as described in Appendix C; note that the operating system CD must
be mounted systemwide.
At
the console prompt (>>>), enter the SHOW DEVICE command and scan the
devices listed in the output to determine the name of the CD drive.
Look for a device listed with its hardware address, as in the last
line of the following example; compare this information with that
provided by the table in step 2.
For additional information, see the HP OpenVMS Version 8.4 for Alpha and Integrity Servers Software Product
Description (SPD 82.35.xx)
and the hardware manuals that you received with your Alpha computer.
At
the console prompt, enter the following command, where lan-device-name is the LAN device (for example, EWA0)
identified with your computer:
>>> B -FLAGS 0,0 -FILE APB_084 lan-device-name
For information about the LAN devices your system
supports, see Table A-1. Ethernet
device EWA0 refers to the first EW device. Subsequent devices are
named EWB0, EWC0, and so on. For most systems, you can use the SHOW
CONFIGURATION console command to list LAN devices available for boot.
For additional information, see the hardware manuals that you received
with your Alpha computer and the OpenVMS software product description
(SPD). The APB file name in the previous command is the unique file
name that was assigned to the APB.EXE file when it was copied from
the operating system CD to the InfoServer. This file is the name
of the APB program used for the initial system load (ISL) boot program.
Table A-1 Supported LAN Devices
Alpha
Computer
Ethernet
Device
FDDI Device
ALPHAbook 1
EOA0
-
AlphaServer 400 series
EWA0
FWA0
AlphaServer 1000 series
ERA0, EWA0
FRA0
AlphaServer 1000A series
EWA0
FWA0
AlphaServer 1200 series
EWA0
FWA0
AlphaServer 2000 series
ERA0, EWA0
FRA0
AlphaServer 2100, 2100A series
ERA0, EWA0
FRA0
AlphaServer 4100 series
EWA0
FWA0
AlphaServer
8200 series
EXA0, EWA0
FXA0
AlphaServer 8400 series
EXA0, EWA0
FXA0
AlphaStation 200 series
EWA0
FWA0
AlphaStation 400 series
EWA0
FWA0
AlphaStation 500 series
EWA0
FWA0
AlphaStation 600 series
ERA0, EWA0
FWA0
DEC 2000 series
ERA0
—
DEC 3000 series
ESA0
"n/ESA0"
DEC 4000 series
EZA0
—
DEC 7000 series
EXA0
FXA0
DEC 10000 series
EXA0
FXA0
DIGITAL Personal Workstation
(DPWS) series
EWA0
FWA0
AlphaServer DS15
EWA0, EIA0, EGA0
FWA0
AlphaServer DS20
EWA0, EIA0, EGA0
FWA0
AlphaServer DS20e
EWA0, EIA0, EGA0
FWA0
AlphaServer DS25
EWA0, EIA0, EGA0
FWA0
AlphaServer ES40
EWA0, EIA0, EGA0
FWA0
AlphaServer ES45
EWA0, EIA0, EGA0
FWA0
AlphaServer ES47
EWA0, EIA0, EGA0
FWA0
AlphaServer ES80
EWA0, EIA0, EGA0
FWA0
AlphaServer GS60
EWA0, EGA0
FWA0
AlphaServer GS80
EWA0, EIA0, EGA0
FWA0
AlphaServer GS140
EWA0, EGA0
FWA0
AlphaServer GS160
EWA0, EIA0, EGA0
FWA0
AlphaServer GS320
EWA0, EIA0, EGA0
FWA0
AlphaServer GS1280
EWA0, EIA0, EGA0
FWA0
NOTE: Note the following about devices and computers
listed in Table A-1:
The console LAN device
EGA0 is the Gigabit Ethernet device DEGXA. OpenVMS refers to this
device as an EW device rather than an EG device. To correlate the
console device names for EG and EW devices, compare the MAC address
listed for each device by the console and by the LANCP SHOW CONFIGURATION
commands.
If you are using a DEC
3000 or 4000 series system, note the following:
On DEC 3000 series systems,
you can boot through the InfoServer with an Ethernet PMAD device or
FDDI DEFTA device by specifying the device name as “n/ESA0”. The value for n is the TURBOchannel slot number, which you can obtain by entering
the SHOW CONFIGURATION command at the console prompt (>>>) and examining
the display. For more information, see Section A.1.2.
On DEC 4000 series systems,
you must specify the ISL file name in uppercase
(for example, APB_084).
The
InfoServer ISL program then displays the following menu:
Network Initial System Load Function
Version 1.2
FUNCTION FUNCTION
ID
1 - Display Menu
2 - Help
3 - Choose Service
4 - Select Options
5 - Stop
Enter a function ID value:
Respond
to the prompts as follows, and press Enter after
each entry:
Enter
3 for the function ID.
Enter
2 for the option ID.
Enter
the service name (ALPHA084 is the default service name for the InfoServer
hardware; for the InfoServer utility, ask your system or network manager
for the service name).
A sample display follows:
Enter a function ID value: 3 OPTION OPTION
ID
1 - Find Services
2 - Enter known Service Name
Enter an Option ID value: 2 Enter a Known Service Name: ALPHA084
After you boot, the system displays a menu from
which you can choose options to perform the such tasks as the following:
Install or upgrade the
operating system using the PCSI utility.
Enter a DCL environment
from which you can perform preinstallation or maintenance tasks such
as mounting or showing devices and backing up or restoring files on
the system disk.
Shut down the system.
NOTE: If you boot the
OpenVMS Alpha operating system CD from an InfoServer but lose your
connection during the installation or upgrade procedure (the system
is unresponsive and pressing Ctrl/Y does not return you to the menu), do the following:
IF ...
THEN ...
You previously chose the INITIALIZE option
Reboot the OpenVMS Alpha operating system CD.
Choose the install/upgrade option (1) on the menu
and perform the installation or upgrade procedure again.
You previously chose the PRESERVE option
Reboot the OpenVMS Alpha operating system CD.
Enter the DCL environment by choosing option 8 on
the menu.
Mount the device containing your backup copy of the
target disk and the device that is your target disk.
Restore the backup copy of your target disk by entering
the appropriate BACKUP commands. (See Appendix F for complete information about using MOUNT
and BACKUP commands to restore a system disk.)
Log out from the DCL environment.
Choose the install/upgrade option (1) on the menu
and perform the installation or upgrade procedure again.
A.1.2 Booting with a PMAZB or PMAZC TURBOchannel Adapter
PMAZB and PMAZC TURBOchannel adapters are adapters
that are software-compatible with the integrated SCSI ports on DEC
3000 Alpha series systems. If your system is not a DEC 3000 Alpha
series system, skip to the next section.
The DEC 3000 Alpha series system consoles implement
the SHOW CONFIGURATION console command, which displays information
about the TURBOchannel options and the built-in adapters in the system.
When a PMAZB or PMAZC adapter is installed in the TURBOchannel, the
SHOW CONFIGURATION command displays the “PMAZB-AA” or
“PMAZC-AA” string, the TURBOchannel slot number, and
the device status.
The DEC 3000 Alpha series consoles also implement
the SHOW DEVICE command, which displays information about the devices
in the system. Because the integrated SCSI adapter is built into
every DEC 3000 Alpha series system, the SHOW DEVICE console command
can display the SCSI devices connected to the integrated SCSI ports.
However, the SHOW DEVICE console command cannot display the SCSI
devices connected to the PMAZB or PMAZC SCSI ports.
To make the console display the devices connected
to the PMAZB or PMAZC SCSI ports, enter the following command at the
console prompt, wherex is the TURBOchannel
slot number in which the PMAZB or PMAZC adapter is installed:
>>> TEST TCx CNFG
This command displays the devices that are connected
to each SCSI port of the PMAZB or PMAZC adapter. The device controller
letters are either A or B, based upon the PMAZB or PMAZC ports to
which the devices are connected. Do not confuse these devices with
any DKAxxx or DKBxxx devices displayed by the SHOW DEVICE command, which shows SCSI devices
on the integrated SCSI ports only.
To boot from a device connected to a PMAZB or
PMAZC adapter, enter the boot command as follows:
>>> BOOT "x/dkyzzz"
The following conventions are used:
x is the TURBOchannel slot number in which the PMAZB or PMAZC adapter
is installed.
dk is the device code of the boot device.
y is either A or B, depending on the SCSI port of the PMAZB or PMAZC
adapter that contains the boot device.
zzz is the SCSI unit number of the boot device.
The OpenVMS Alpha operating system does not distinguish
between the PMAZB or PMAZC adapter and the integrated SCSI adapter.
The operating system views them as identical adapters. Because the
operating system searches for I/O adapters in backplane slot number
order, device controller letters are assigned that correspond to the
backplane order of the TURBOchannel options, followed by the integrated
adapters. This is different from console SCSI device naming, which
always designates SCSI devices on the integrated SCSI ports as either
A or B port devices.
On a DEC 3000 Model 500 Alpha system with no TURBOchannel
options installed, the OpenVMS Alpha operating system names the integrated
SCSI ports PKA0 and PKB0, and the devices connected to the ports inherit
the controller letter from the port controller letter (A or B). However,
if a PMAZB or PMAZC adapter is installed in the TURBOchannel, the
operating system names the PMAZB or PMAZC SCSI ports PKA0 and PKB0
and names the integrated SCSI ports PKC0 and PKD0. The devices connected
to the ports inherit the controller letter from the port controller
letter (A, B, C, or D).
A.1.3 Booting Manually from the System Disk
Boot the system disk manually as follows:
IF ...
THEN GO TO...
The OpenVMS Alpha operating system is running
Step 1
The OpenVMS Alpha operating system is not running
Step 4
Log
in to the SYSTEM account.
Enter
the following command and press Enter:
$ @SYS$SYSTEM:SHUTDOWN
Answer
the questions displayed by the system. When the procedure asks whether
an automatic reboot should be performed, press Enter for NO. When the procedure is finished, it displays the following
message:
SYSTEM SHUTDOWN COMPLETE
Halt
the system by pressing either Ctrl/P or Halt. (See Section A.3.1for more information about how to halt your
Alpha computer.)
Enter
the BOOT command in the following format:
BOOT device-name
Substitute the device name of the system disk
for device-name. For example, to boot from a
drive with a device name of DKA400, enter the following command and
press Enter:
>>> BOOT DKA400
To boot from the network, enter the following
command and press Enter:
>>> BOOT ESA0
A.1.4 Performing a Conversational (Interactive) Boot
A conversational boot is most commonly used in
research and development environments and during software upgrades.
Perform a conversational boot to stop the boot process before it
completes. The boot process stops after it loads SYS$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 (ALPHAVMSSYS.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 Alpha operating system is running
Step 1
The OpenVMS Alpha operating system is not running
Step 4
Log
in to the SYSTEM account.
Enter
the following command and press Enter:
$ @SYS$SYSTEM:SHUTDOWN
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
Halt
the system by pressing either Ctrl/P or Halt. (For more information about how to halt
your Alpha computer, see Section A.3.1.)
To
begin the conversational boot, enter the BOOT command in the following
format:
BOOT -FLAGS 0,1 [device-name]
for device-name, substitute
the device name of the drive from which you want to boot. For example,
if the system disk has a device name of DKA400, enter the following
command and press Enter:
>>> BOOT -FLAGS 0,1 DKA400
If you do not specify a device name, the system
boots from the boot device assigned when you entered the SET BOOTDEF_DEV
command.
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.
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.
HELP
Displays a summary of the SYSBOOT commands on the terminal screen.
SET parameter-name
Establishes the value
of a system parameter.
SET/STARTUP
Sets the name of the system startup command procedure.
SHOW [parameter]
Displays active, current,
default, maximum, and minimum values for specific parameters. (Use
qualifiers to display characteristics of parameters grouped by categories.)
USE [file-spec]
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.
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:
Begin
the conversational boot by entering the BOOT command in the following
format:
BOOT -FLAGS 0,1 [device-name]
For device-name, substitute
the device name of the drive from which you want to boot. For example,
if the system disk has a device name of DKA400, enter the following
command and press Enter:
>>> BOOT -FLAGS 0,1 DKA400
Enter
the following command and press Enter:
SYSBOOT> SET STARTUP_P1 "MIN"
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
Enter
the following command to continue booting:
SYSBOOT> CONTINUE
A.1.6 Booting with the XDelta Utility (XDELTA)
The XDelta utility (XDELTA) is a debugging tool
that system programmers use. The procedure for booting all Alpha
computers with XDELTA is the same.
The following table describes the valid values
you can specify when booting with XDELTA:
Value
System Response
0
Normal, nonstop boot (default).
1
Begins a conversational boot and then displays the SYSBOOT prompt.
2
Includes XDELTA but does not take the initial breakpoint.
3
Displays the SYSBOOT prompt and includes XDELTA but does not take
the initial breakpoint.
6
Includes XDELTA and takes the initial breakpoint.
7
Includes XDELTA, displays the SYSBOOT prompt, and takes the initial
breakpoint at system initialization.
The following is an example of booting with XDELTA
from the console prompt:
>>> BOOT -FLAGS 0,7
For more information about using XDELTA, see the HP OpenVMS Delta/XDelta Debugger Manual.
A.1.7 Booting from a Different Root Directory
By default, the OpenVMS Alpha operating system
is installed in the system root directory [SYS0]. However, if you
have created a cluster system disk, you can use the SYS$MANAGER:CLUSTER_CONFIG.COM
procedure to add a copy of the operating system to a different root
directory. (See the HP OpenVMS System Manager's Manual for more information about using the SYS$MANAGER:CLUSTER_CONFIG.COM
procedure.)
To boot from a different directory (for example,
[SYS3]), enter the BOOT command as follows:
>>> BOOT -FLAGS 3,0 DKA200
A.1.8 Booting over the Network with an Alternate TURBOchannel Adapter
You can use an alternate TURBOchannel adapter
to boot a DEC 3000 series Alpha computer (with the TURBOchannel option)
over the network in an InfoServer or OpenVMS Cluster environment.
Examples of alternate TURBOchannel adapters are the PMAD (which connects
to the Ethernet) and the DEFTA (which connects to the FDDI).
To boot from a TURBOchannel device connected to
one of these alternate adapters, enter the boot command as follows:
>>> BOOT "n/ESA0"
The value for n is the
TURBOchannel slot number for the device, which you can obtain by entering
the SHOW CONFIGURATION command at the console prompt (>>>) and examining
the display. In the following example, the TURBOchannel slot number
(listed under the “TCINFO” column) is 0:
>>> SHOW CONFIGURATIONDEC 3000 - M300
Digital Equipment Corporation
VPP PAL X5.56-80800101/OSF PAL X1.34-80800201 - Built on 18-DEC-1996 11:376
TCINFO DEVNAM DEVSTAT
------ -------- --------
CPU OK KN16-AA -V3.2-S6CD-I151-sV2.0-DECchip 21064 P3.0-150
ASIC OK
MEM OK
MEM OK
6
CXT OK
5
NVR OK
SCC OK
NI OK
ISDN OK
4
SCSI OK
0-PMAD-AA TC0
A.1.9 Booting in an Emergency
If a system problem prevents your system from
booting, you might need to perform an emergency boot operation. Table A-3 summarizes these emergency
boot operations, and the sections that follow describe each boot operation
in more detail.
Table A-3 Emergency Boot Procedures
Operation
When to Use
Booting with default system parameters
When parameter values in the parameter
file have been modified so that the system is unbootable
Booting without startup and login procedures
If an error in the startup
or login procedure prevents you from logging in
Booting without the user authorization file
If you have forgotten
the password and cannot log in to a privileged account
A.1.9.1 Booting with Default System Parameters
If
the current values stored in the parameter file have been incorrectly
modified, these incorrect values might cause the system to become
unbootable. With a conversational boot operation, you can reset the
active values for all system parameters to the default value. (In
most cases, HP recommends that you use AUTOGEN to modify system parameters.
In certain cases, however, you can use a conversational boot to modify
a parameter value temporarily. To change a parameter
value permanently, you must edit MODPARAMS.DAT
and run AUTOGEN. For instructions, see the HP OpenVMS
System Manager's Manual, Volume 2: Tuning, Monitoring, and Complex
Systems.) The default values allow you to boot the system
temporarily so you can correct the problem.
How to Perform This Task
Begin
the conversational boot by entering the BOOT command in the following
format:
BOOT -FLAGS 0,1 [device-name]
For device-name, substitute the device name of the drive from which you
want to boot. For example, if the system disk has a device name of
DKA400, enter the following command and press Enter:
>>> BOOT -FLAGS 0,1 DKA400
At
the SYSBOOT> prompt, enter the following command:
SYSBOOT> USE DEFAULT
The USE DEFAULT command specifies that default
values should be used for all parameters.
To
avoid starting all layered products on a system that is not tuned
for them, possibly causing the system to hang, set the STARTUP_P1
system parameter as follows:
SYSBOOT> SET STARTUP_P1 “MIN”
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 3:
SYSBOOT> SET WRITESYSPARAMS 0
Enter
the following command to continue booting:
SYSBOOT> CONTINUE
When
the system finishes booting, determine which changed parameter caused
the problem and reset the parameter value. If you specified the value
for the parameter in the AUTOGEN parameter file MODPARAMS.DAT, fix
the value in that file and run AUTOGEN. For more information, see
the HP OpenVMS System Manager's Manual, Volume 2: Tuning,
Monitoring, and Complex Systems.
After
your system runs for at least 24 hours, run AUTOGEN in feedback mode,
following the steps described in Section 7.24. Be sure to examine the AGEN$PARAMS.REPORT,
as recommended. If necessary, modify system parameters as instructed
in Section 7.25.
If you need assistance, contact your software support representative.
Once you feel confident that the problem is corrected, and AUTOGEN
has been run through the SETPARAMS phase, reboot the system.
Example
SYSBOOT> USE DEFAULTSYSBOOT> SET STARTUP_P1 “MIN”SYSBOOT> SET WRITESYSPARAMS 0SYSBOOT> CONTINUEUsername: SYSTEMPassword:$ EDIT SYS$SYSTEM:MODPARAMS.DAT .
.
.
[Insert line(s) to reset parameter value(s)]
.
.
.
A.1.9.2 Booting Without Startup and Login Procedures
If the system does not complete the startup procedures
or does not allow you to log in, you might need to bypass the startup
and login procedures. The startup and login procedures provided by
HP should always work. However, if you introduce an error when modifying
the startup or login procedure, it is possible to accidentally lock
yourself out of the system.
How to Perform This Task
Begin
the conversational boot by entering the BOOT command in the following
format:
BOOT -FLAGS 0,1 [device-name]
For device-name, substitute
the device name of the drive from which you want to boot. For example,
if the system disk has a device name of DKA400, enter the following
command and press Enter:
>>> BOOT -FLAGS 0,1 DKA400
Enter
the following command at the SYSBOOT> prompt:
SYSBOOT> SET/STARTUP OPA0:
Enter
the following command to ensure that the operating system does not
record for subsequent system reboots the STARTUP_P1 parameter change
you made in step 2:
SYSBOOT> SET WRITESYSPARAMS 0
Enter
the following command to continue booting:
SYSBOOT> CONTINUE
When
the system is booted, the operator console displays the DCL command
prompt ($). You are logged in.
Enter
the following DCL command:
$ SET NOON
This command directs the operating system to ignore
any errors that might occur. If you do not enter this command and
you invoke an error, the system logs you out.
Correct
the error condition that caused the login failure. (That is, make
the necessary repairs to the startup or login procedure, or to the
SYSUAF.DAT file.)
Use a text editor to correct
the startup or login file. Note that some system consoles might not
supply a screen-mode editor. You can also copy a corrected file and
delete the incorrect version by using the RENAME and DELETE commands.
Perform
a normal startup by entering the following command:
$ @SYS$SYSTEM:STARTUP
Example
SYSBOOT> SET/STARTUP OPA0:SYSBOOT> SET WRITESYSPARAMS 0SYSBOOT> CONTINUE$ SET NOON$ SET DEFAULT SYS$SYSROOT:[SYSEXE]$ @SYS$SYSTEM:STARTUP
A.1.9.3 Booting Without the User Authorization File
Ordinarily, the startup and login procedures provided
by HP always work; however, certain conditions can cause them to fail.
A simple way to lock yourself out of the system is to set passwords
to login accounts and forget them. Another way to be locked out is
if one or more core system Product Authorization Key (PAK) software
licenses are unavailable or expired. In such emergencies, perform
a conversational emergency boot by performing the steps given in this
section.
How to Perform This Task
Halt
the system by pressing Ctrl/P or
whatever method is used for your computer. (See Section A.3 for more information
about how to halt Alpha computer systems.)
Begin
the conversational boot by entering the BOOT command in the following
format:
BOOT -FLAGS 0,1 [device-name]
For device-name, substitute
the device name of the drive from which you want to boot. For example,
if the system disk has a device name of DKA400, enter the following
command and press Enter:
>>> BOOT -FLAGS 0,1 DKA400
If your system has a hardware password (various
systems support a password that prevents unauthorized access to the
console), you need this password for logging in to the console. If
you do not have this password, contact HP customer support to reset
the hardware console password.
Enter
the following commands at the SYSBOOT> prompt:
SYSBOOT> SET/STARTUP OPA0:SYSBOOT> SET WINDOW_SYSTEM 0SYSBOOT> SET WRITESYSPARAMS 0SYSBOOT> CONTINUE
The first three commands request that:
OpenVMS read the system startup commands directly
from the system console
The Windows system (if any) not start
OpenVMS not record the parameter changes for subsequent
system reboots
The last command causes the booting to continue.
At
the DCL prompt, the system now accepts startup commands directly from
the console. Enter the following two commands as shown. These commands
allow a normal system startup while you are left logged in on the
console. Without the SPAWN command, you would be logged out when
the startup completes.
$ SPAWN$ @SYS$SYSTEM:STARTUP
Once
you log out of this session, the system completes the startup and
can be used normally. Optionally, you can choose to reboot the system.
NOTE: Instead of using the SET/STARTUP OPA0: command,
an alternative method of booting under these emergency conditions
is to set the UAFALTERNATE system parameter to use the alternate authorization
file rather than the standard user authorization file. Setting the
system parameter UAFALTERNATE defines the logical name SYSUAF to refer
to the file SYS$SYSTEM:SYSUAFALT.DAT. If this file is found during
a normal login, the system uses it to validate the account and prompts
you for the user name and password.
HP does not recommend this method. If an alternate
SYSUAFALT.DAT file has been configured on your system, the UAFALTERNATE
method will likely fail (assuming you do not know the password for
the privileged account stored within the SYSUAFALT.DAT file). In
addition, the OPA0: system console is critical to system operations
and system security and allows access when the SYSUAF system authorization
database is unavailable or corrupted; when core product license PAKs
are not registered, are expired, or are disabled; and in various system
failures.
Example
SYSBOOT> SET/STARTUP OPA0:SYSBOOT> SET WINDOW_SYSTEM 0SYSBOOT> SET WRITESYSPARAMS 0SYSBOOT> CONTINUE$ SPAWN$ @SYS$SYSTEM:STARTUP$