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6-12 AlphaServer GS80/160/320 User’s Guide
6.2.3 Boot_osflags
The boot_osflags environment variable sets the default boot flags and,
for OpenVMS,arootnumber.
Boot flags contain information used by the operating system to determine some
aspects of a system bootstrap. Under normal circumstances, you can use the
default boot flag settings.
To change the boot flags for the current boot only, use the flags_value argument
with the boot command.
The syntax is:
set boot_osflags flags_value
The flags_value argument is specific to the operating system.
Tru64 UNIX Systems
Tru64 UNIX systems take a single ASCII character as the flags_value
argument.
a
Load operating system software from the specified boot device
(autoboot). Boot to multiuser mode.
i
Prompt for the name of a file to load and other options (boot
interactively). Boot to single-user mode.
s
Stop in single-user mode. Boots /vmunix to single-user mode and stops
at the # (root) prompt.
D Full dump; implies “s”aswell.Bydefault,ifTru64 UNIX crashes, it
completes a partial memory dump. Specifying “D” forces a full dump at
system crash.