Security Keyswitch - Sun Microsystems Fire V890 Service Manual

Security Keyswitch

The four-position security keyswitch controls the power-on modes of the system and
prevents unauthorized users from powering off the system or reprogramming
system firmware. The following table describes the function of each keyswitch
setting.
Position Icon
Normal
Locked
Description
This setting enables the system Power button to power the
system on or off. If the operating system is running, pressing
and releasing the Power button initiates a graceful software
system shutdown. Pressing and holding the Power button in
for five seconds causes an immediate hardware power off.
OpenBoot PROM Version 4.17.x provides diagnostics that are
enabled by default. Full OpenBoot Diagnostics run at initial
power-on. For more information about these
enhancements, the new and redefined configuration
variables, and the new standard (default) configuration, refer
to OpenBoot PROM Enhancements for Diagnostic Operation
Guide, which is included on the Sun Fire V890 Documentation
CD.
The Locked setting:
• Disables the system Power button to prevent unauthorized
users from powering the system on or off
• Disables the keyboard Stop-A command, terminal Break key
command, ~# tip window command, and RSC break
command, preventing users from suspending system
operation to access the system ok prompt
• Prevents unauthorized programming of the system flash
PROMs
The Locked position is the recommended setting for normal
day-to-day operations.
Chapter 1 Preparing to Service the System 15