Technical data

The Graphical User Interface
12 PowerPC Open Firmware Quick Start Guide
Display and Security of Icons
There is security attached to each of the icons in PowerPC Open
Firmware. Executing an icon is like executing a menu option, Þrst a
security check is done prior to actual execution of the item if
security? = true . There are eight icons, however, the number of icons
displayed on your VGA screen depend on your security settings in
the Þrmware. By default, your PowerPC system is shipped with
security?
= false (the security system in the Þrmware is disabled).
The Graphical User Interface is conÞgured in the factory with
security? =false which displays only the Þrst four icons. It doesnÕt
matter what the NVRAM conÞguration variable
security-mode is
in this case.
If security is desired and you wish to display all eight icons, you
must set
security? = true and choose new passwords for each level
using the
Change the Security Level menu option. Also, the
NVRAM conÞguration variable
security-mode must be set to
administrator.
Icon Description
Click this icon to boot an operating system or client
interface.
This option may be executed by any level of user
regardless of the security? value.
Click this icon to look at the computer system
components. A graphical display showing the
PowerPC processor type, memory size, and L2 cache
size will appear in the execution window. A list of
attached boot-related devices is also displayed.
If security? =
false any user level can execute this
option.
If security? = true, security-mode must be set at
novice or higher