Troubleshooting guide

4-6 DS20E Reference Guide
Compaq Confidential – Need to Know Required
Writer: Robert Young Project: Compaq AlphaServer DS20E System Comments:
Part Number: FR-K8F6W-UA .A01 File Name: e-ch4 Operating the System.doc Last Saved On: 10/4/99 2:40 PM
Table 4-1
OpenVMS Boot Flag Settings
Flags_Value Bit Number Meaning
1 0 Bootstrap conversationally (enables you to modify
SYSGEN parameters in SYSBOOT).
2 1 Map XDELTA to a running system.
4 2 Stop at initial system breakpoint.
8 3 Perform diagnostic bootstrap.
10 4 Stop at the bootstrap breakpoints.
20 5 Omit header from secondary bootstrap image.
80 7 Prompt for the name of the secondary bootstrap file.
100 8 Halt before secondary bootstrap.
10000 16 Display debug messages during booting.
20000 17 Display user messages during booting.
Example
In the following UNIX example, the boot flags are set to autoboot the system
to multiuser mode when you enter the boot command.
P00>>> set boot_osflags a
In the following OpenVMS example, root_number is set to 2 and boot_flags is
set to 1. With this setting, the system will boot from root directory
SYS2.SYSEXE to the SYSBOOT prompt when you enter the boot command.
P00>>> set boot_osflags 2,1
In the following OpenVMS example, root_number is set to 0 and boot_flags is
set to 80. With this setting, you are prompted for the name of the secondary
bootstrap file when you enter the boot command.
P00>>> set boot_osflags 0,80