Maximum And Minimum Levels Of Post; Diag-Level Variable Set To Max - Sun Microsystems Sun Ultra 60 Service Manual

3.4 Maximum and Minimum Levels of
POST
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, a NVRAM variable.
The default setting for diag-level is max. An example of a max level POST output
on serial port A is provided in Section 3.4.1 "Diag-Level Variable Set to max" on
page 3-6. An example of a min level POST output on serial port A is provided in
Section 3.4.2 "Diag-Level Variable Set to min" on page 3-13
To set the diag-level variable to min, type:
To return to the default setting:
3.4.1

Diag-Level Variable Set to max

When the diag-level variable is set 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). Table 3–1 identifies a typical serial port A
POST output with the diag-level variable set to max.
Diag-Level Variable Set to max
CODE EXAMPLE 3–1
Executing Power On SelfTest
0>
(continued)
Sun Ultra 60 Service Manual ♦ March 1999, Revision A
3-6
ok setenv diag-switch? false
ok setenv diag-level min
ok setenv diag-level max