Maximum And Minimum Post Levels; Diag-Level Variable Set To Max - Sun Microsystems Sun Blade 100 Service Manual

3. Observe the monitor to verify that POST is executing.
4. When the POST is complete, type the following at the system prompt:
ok% setenv diag-switch? false
3.4

Maximum and Minimum POST Levels

Two levels of POST are available: maximum (max) level and minimum (min) level.
The system initiates the selected level of POST based upon the setting of
diag-level, an NVRAM variable. The default setting for diag-level is max.
To set the diag-level variable to min before power-cycling the system, type:
ok% setenv diag-level min
To return to the default setting:
ok% setenv diag-level max
An example of a max-level POST output at the serial port is provided in Section 3.4.1
"diag-level Variable Set to max" on page 3-4. An example of a min-level POST
output at the serial port is provided in Section 3.4.2 "diag-level Variable Set to min"
on page 3-7.
3.4.1

diag-level Variable Set to max

When you set the diag-level variable to max, POST enables an extended set of
diagnostic-level tests. This mode requires approximately two minutes to complete
(with 128 Mbytes of DIMM installed).
POST output with diag-level set to max and a single 512 Mbyte DIMM installed.
Note – Video output is disabled while POST is initialized.
3-4 Sun Blade 100 Service Manual • October 2000
shows a typical serial port
CODE EXAMPLE 3-1