Compaq DS20E - AlphaStation - 1 GB RAM User Manual page 134

boot_osflags
The boot_osflags environment variable passes information to the boot command. That
information is dependent on the operating system to be booted.
When the operating system is DIGITAL UNIX, the syntax is:
set boot_osflags flags_value
The options for flags_value are:
a Load operating system software from the specified boot device (autoboot). Boot
to multi-user 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" as well. By default, if DIGITAL UNIX crashes, it
completes a partial memory dump. Specifying "D" forces a full dump if the
system crashes.
When the operating system is OpenVMS, the syntax is:
set boot_osflags root_number,boot_flags
root_number Directory number of the system disk on which OpenVMS files are
located. For example:
root_number
0 (default)
1
2
3
boot_flags The hexadecimal value of the bit number or numbers set. To specify
multiple boot flags, add the flag values (logical OR). See Table 4-7.
4-50 AlphaServer DS20 User's Guide
Root Directory
[SYS0.SYSEXE]
[SYS1.SYSEXE]
[SYS2.SYSEXE]
[SYS3.SYSEXE]