Technical data
Starting Up and Shutting Down the System
4.5 Booting with Controlled Startup
How to Perform This Task
1. Edit the file SYS$SYSTEM:MODPARAMS.DAT. AUTOGEN uses this file to
modify parameters.
2. Add a line to MODPARAMS.DAT assigning the name of your alternate
procedure to the symbol STARTUP. For example:
STARTUP = "SYS$SYSTEM:MY_STARTUP.COM"
3. At a convenient time, invoke AUTOGEN. When the system reboots, the
procedure specified in step 2 becomes the default startup command procedure.
Example
$ EDIT SYS$SYSTEM:MODPARAMS.DAT
.
.
.
[Insert the following line in MODPARAMS.DAT:]
STARTUP = "SYS$SYSTEM:MY_STARTUP.COM"
.
.
.
$ @SYS$SYSTEM:AUTOGEN SAVPARAMS REBOOT
4.5.3 Booting with Minimum Startup
In special 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.
When you boot with minimum startup, the system starts only the components
that are absolutely required to run the system. These tasks can vary between
different releases of the operating system.
How to Perform This Task
1. Follow the instructions for performing a conversational boot in one of the
following manuals:
• On VAX systems, refer to 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, refer to the most recent version of the OpenVMS
Alpha Upgrade and Installation Manual.
2. At the SYSBOOT> prompt, enter the following command:
SYSBOOT> SET STARTUP_P1 "MIN"
3. Enter the following command to continue booting:
SYSBOOT> CONTINUE
4. After the system boots, log in and enter the following commands to invoke
SYSMAN and clear the STARTUP_P1 parameter you set in step 2:
$ RUN SYS$SYSTEM:SYSMAN
SYSMAN> PARAMETERS USE CURRENT
SYSMAN> PARAMETERS SET STARTUP_P1 ""
SYSMAN> PARAMETERS WRITE CURRENT
Starting Up and Shutting Down the System 4–15