3-6 Sun Blade 150 Service Manual • June 2002
4. When POST is complete, type the following at the system prompt:
Note – You should always reset the diag-switch to false when you are finished.
If you do not reset the diag-switch, the system will run POST every time that the
system is power-cycled, which delays system boot-up.
3.6 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:
To return to the default setting:
An example of a max-level POST output at the serial port is provided in
Section 3.6.1, “diag-level Variable Set to max” on page 3-6. An example of a min-
level POST output at the serial port is provided in Section 3.6.2, “diag-level
Variable Set to min” on page 3-18.
3.6.1 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).
CODE EXAMPLE 3-1 shows a typical serial port
POST output with diag-level set to max and a single 512 Mbyte DIMM installed.
ok% setenv diag-switch? false
ok% setenv diag-level min
ok% setenv diag-level max
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