Compaq AlphaServer DS20E Reference Manual page 245

Table 8–4 Troubleshooting Boot Problems (Continued)
Problem/Possible Cause
System does not boot.
Environment variables are
incorrectly set. This could
happen if the main logic
board has been replaced,
which would cause a loss of
the previous configuration
information.
System will not boot over
the network.
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Action
Verify that no unsupported adapters are installed.
Use the SRM show and set commands to check
and set the values assigned to boot-related
variables such as auto_action, bootdef_dev, and
boot_osflags.
For problems booting over a network, check the
ew*0_protocols or ei*0_protocols
environment variable settings: Systems booting
from a Tru64 UNIX server should be set to
bootp; systems booting from an OpenVMS server
should be set to mop. Run the test command to
check that the boot device is operating.
Troubleshooting 8-7