Technical data

Starting Up and Shutting Down the System
4.8 Shutting Down the System
On VAX systems, the following message is also displayed:
USE CONSOLE TO HALT SYSTEM
Halt the system when you see this message.
4.8.6 Performing an Emergency Shutdown Using Console Commands
Certain computer consoles have an additional emergency CRASH command. If
your computer has the CRASH command, it is located on the console media; you
can execute it only from the console prompt on the console terminal. For example:
P00>>> CRASH
If the CRASH command does not exist on your console, you can shut down the
system manually from the console.
Note
Use CRASH commands from the console only if the OPCCRASH.EXE
program fails.
On VAX systems, enter the following commands:
P00>>> D PSL 041F0000
P00>>> D PC FFFFFFFF
P00>>> CON
On Alpha systems, enter the following commands:
P00>>> D PS 1F00
P00>>> D PC FFFFFFFFFFFFFF00
P00>>> CON
See one of the following manuals for a description of the CRASH command or for
equivalent commands to use to force an abrupt emergency shutdown:
• On VAX systems, see the most recent versions of the OpenVMS VAX Upgrade
and Installation Manual and the upgrade and installation supplement for
your VAX computer.
• On Alpha systems, see the most recent version of the OpenVMS Alpha
Upgrade and Installation Manual.
4–32 Starting Up and Shutting Down the System