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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
1. 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
2. Enter the following command at the SYSBOOT> prompt:
SYSBOOT> SET/STARTUP OPA0:
3. 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
4. Enter the following command to continue booting:
SYSBOOT> CONTINUE
5. When the system is booted, the operator console displays the DCL command prompt ($).
You are logged in.
6. 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.
7. 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.
8. Perform a normal startup by entering the following command:
$ @SYS$SYSTEM:STARTUP
Example
SYSBOOT> SET/STARTUP OPA0:
SYSBOOT> SET WRITESYSPARAMS 0
SYSBOOT> 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.
A.1 Booting Operations 177