The following sections describe halt and shutdown operations
for Alpha computers.
Halting the System During installation, upgrade, and related system operations,
you might need to halt your system. The methods for halting Alpha
computers differ slightly with certain models, as described in the
next section.
The following table summarizes the ways you can halt specific
Alpha computers:
Alpha
Computer
How to Halt
AlphaServer 300, 800, 1000, 1200, 2000,
2100 series
Do
one of the following:
Press the Halt
button.
Press Ctrl/P.
AlphaServer 8200, 8400 series
Press
Ctrl/P.
AlphaStation 200, 400, 500, 600 series
Do
one of the following:
Press the Halt
button (if the graphics monitor is serving as the console).
Press Ctrl/P (if you are using the alternate console
and port).
DEC 2000, 3000 series
Do
one of the following:
Press the Halt
button (if the graphics monitor is serving as the console).
Press Ctrl/P (if you are using the alternate console
and port).
DEC 4000 series
Do
one of the following:
Press the Halt
button.
Press the Break key on the console (the default
setting).
Press Ctrl/P, but only after using the console command SET
TTA0_HALTSn to enable this key combination, where n can be 6 (enables the Break key and Ctrl/P) or 2 (enables
Ctrl/P but disables the Break key).
DEC
7000, 10000 series
Press Ctrl/P.
Shutting Down the
System Before you shut down the operating system, decide if you want
it to reboot automatically or if you want to enter console-mode
commands after the shutdown completes.
You can perform the following three types of shutdown operations:
An orderly shutdown with SYS$SYSTEM:SHUTDOWN.COM
(see
Orderly Shutdown )
Orderly Shutdown The
SHUTDOWN.COM procedure shuts down the system while performing maintenance
functions such as disabling future logins, stopping the batch and
printer queues, dismounting volumes, and stopping user processes.
To use the SHUTDOWN.COM command procedure, log in to the SYSTEM
account, enter the following command, and press the Return key:
$@SYS$SYSTEM:SHUTDOWN
For more information about the SHUTDOWN.COM command procedure,
see the HP OpenVMS System Manager's Manual, Volume 1: Essentials.
Emergency Shutdown
with OPCCRASH.EXE If you cannot perform an orderly shutdown with the SHUTDOWN.COM
procedure, run the OPCCRASH.EXE emergency
shutdown program. To run the OPCCRASH.EXE program, log in to the
SYSTEM account, enter the following command, and press the Return
key:
$RUN SYS$SYSTEM:OPCCRASH
For more information about the OPCCRASH program, see the HP OpenVMS System Manager's Manual, Volume 1: Essentials.
Emergency Shutdown
with Crash Commands Use
crash commands only if the system is "hung" (stops
responding to any commands) and you cannot log in to the SYSTEM
account to use the SHUTDOWN.COM procedure or the OPCCRASH.EXE program.
The method described here works on all Alpha computers.
However, on certain systems, you can force your processor to fail
(crash) by entering a specific console command. See the hardware
manuals that came with your computer for that information.
To force your processor to fail, do the following:
Halt the system
by entering Ctrl/P or by pressing the Halt button. (See
Halting the System for more information about
how to halt your Alpha computer.)
To examine processor registers, enter the following
commands and press the Return key:
>>>E -N F R0>>>E PS
The system displays the contents of the registers. Write down
these values if you want to save information about the state of
the system.
Enter the following commands and press the Return
key:
>>>D PC FFFFFFFF00000000>>>D PS 1F00
By depositing these values, you cause the system to write
a memory dump to the system dump file on the disk.
Enter the following command and press the Return
key:
>>>CONTINUE
This causes the system to perform a bugcheck.
After the system reboots, log in to the SYSTEM account.
To examine the dump file, enter the following commands
and press the Return key after each one:
HP OpenVMS Alpha Version 7.3-2 Upgrade and Installation... 
Halt, Boot, and Shutdown Procedures
