DEC 4000 600 series, Owner'S Manual, Page: 89 / 242

Setting Boot Flags (boot_osflags)
Boot Flag Settings
Possible boot flags settings and their meanings for OpenVMS
AXP systems are:
Flag Setting Bit Number Meaning
1 0 Bootstrap conversationally (enables
you to modify SYSGEN parameters
in SYSBOOT).
2 1 Map XDELTA to 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.
For more information about boot flags, refer to OpenVMS Alpha
Version 1.0 Upgrade and Installation Manual (AA–PQYSA–TE).
Setting Environment Variables 4–11