Sun Microsystems SPARCstation 4, Service Manual

Page: 34 / 190

2-6 SPARCstation 4/Xterminal 1 Service Manual • January 1995
If the
auto-boot?
parameter is set to
true
(the default), the system boots a
standalone program. To determine which program and device to boot from, the
system checks the
diag-switch?
NVRAM parameter.
TABLE 2-2
summarizes the
effect of the
auto-boot?
and
diag-switch?
parameters.
Once the operating system is running, you can invoke the SunDiag™ System
Exerciser if further diagnostic testing is warranted. Refer to Section 2.7 “SunDiag
System Exerciser, for additional information.
To boot user-specified programs, you must be at the
>
prompt or
ok
prompt. See
Appendix D, for a detailed procedure on how to access the
>
or the
ok
prompt.
TABLE 2-2
Summary of Autoboot and Diagnostic Switch Parameter
1
Settings
1. The boot parameters represented here are default settings. The defaults may be changed by following
the procedures listed in the OpenBoot Command Reference.
auto-boot?
diag-switch? Result
false false
or
true
> or ok prompt
true false
Boot operating system from
device alias “disk” or
“net”
true true
Boot operating system from
device alias “net”