Sun Microsystems Fire V240, Руководство администратора

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58 Sun Fire V210 and V240 Servers Administration Guide • April 2003
5. When you have finished running POST, restore the value of
diag-switch?
to
false
by typing:
Resetting
diag-switch?
to
false
minimizes boot time.
Controlling POST Diagnostics
You control POST diagnostics (and other aspects of the boot process) by setting
OpenBoot configuration variables. Changes to OpenBoot configuration variables
generally take effect only after the machine is restarted.
TABLE 6-3
lists the most
important and useful of these variables. You can find instructions for changing
OpenBoot configuration variables in “To View And Set OpenBoot Configuration
Variables” on page 77.
ok setenv diag-switch? false
TABLE 6-3
OpenBoot Configuration Variables
OpenBoot Configuration
Variable
Description and Keywords
auto-boot
Determines whether the operating system automatically starts up. Default is
true
.
•
true
—Operating system automatically starts once firmware tests finish.
•
false
—System remains at
ok
prompt until you type
boot
.
diag-level
Determines the level or type of diagnostics executed. Default is
min
.
•
off
—No testing.
•
min
—Only basic tests are run.
•
max
—More extensive tests may be run, depending on the device.
diag-script
Determines which devices are tested by OpenBoot Diagnostics. Default is
none
.
• none—No devices are tested.
•
normal
—On-board (centerplane-based) devices that have self-tests are tested.
•
all
—All devices that have self-tests are tested.
diag-switch?
Toggles the system in and out of diagnostic mode. Default is
false
.
•
true
—Diagnostic mode: POST diagnostics and OpenBoot Diagnostics tests may run.
•
false
—Default mode: Do not run POST or OpenBoot Diagnostics tests.