Technical data
Starting Up and Shutting Down the System
4.4 Booting in an Emergency
Field Value
Privileges All
The process name is usually set to the name of the device on which you logged in
(for example, _OPA0:).
How to Perform This Task
1. Perform a conversational boot by following the instructions 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 UAFALTERNATE 1
3. If your system is running DECwindows Motif for OpenVMS systems, you
must also disable the windowing system by entering the following command:
SYSBOOT> SET WINDOW_SYSTEM 0
4. Enter the CONTINUE command to continue booting:
SYSBOOT> CONTINUE
5. When the startup procedure completes, log in on the console terminal by
entering any user name and any two passwords in response to the Username:
and Password: prompts.
6. Enter the following command to use the default UAF:
$ DEFINE/SYSTEM/EXECUTIVE_MODE SYSUAF SYS$SYSTEM:SYSUAF.DAT
7. Use the Authorize utility to fix the problem that caused you to be locked out of
the system (for example, a forgotten password). Enter HELP MODIFY at the
UAF> prompt for information about modifying passwords. For more details,
refer to the OpenVMS System Management Utilities Reference Manual.
8. Enter the following commands to invoke SYSMAN and clear the
UAFALTERNATE system parameter you set in step 2:
$ RUN SYS$SYSTEM:SYSMAN
SYSMAN> PARAMETERS USE CURRENT
SYSMAN> PARAMETERS SET UAFALTERNATE 0
In most cases, Compaq recommends that you use AUTOGEN to modify
system parameters. However, since this parameter is being changed only
temporarily, you can use SYSMAN or SYSGEN to change it back.
9. If you disabled the windowing system in step 3, reenable it by entering the
following command:
SYSMAN> PARAMETERS SET WINDOW_SYSTEM 1
10. Enter the following command to save the changed system parameter values:
SYSMAN> PARAMETERS WRITE CURRENT
4–12 Starting Up and Shutting Down the System