10-2 Sun Ultra 45 and Ultra 25 Workstations Service and Diagnostics Manual • May 2006
10.1 Obtaining the ok Prompt
When a Sun Ultra 45 or Ultra 25 workstation is put into run level state 0, the ok
prompt is displayed. At the ok prompt, you can make changes to the NVRAM and
conduct OpenBoot PROM tests (POST and OpenBoot Diagnostics).
TABLE 10-1 lists
methods for obtaining the ok prompt, listed from most preferred to least desirable.
Caution – The Stop-A key sequence causes a system abort which loses the system
state and might corrupt file systems. Method 1 is the preferred procedure.
TABLE 10-1 Methods for Obtaining the ok Prompt
Method Situation Procedure
1 Operating system is
functioning normally. You have
superuser access.
1. Save all data and close all active applications.
2. Become superuser of the system.
3. Type: # init 0
2 Operating system is
functioning normally. You do
not have superuser access.
1. Save all data and close all active applications.
2. Momentarily press and release the front panel Power button.
3. Select Shutdown from the Power Off window (if a GUI is
displayed).
In a few moments, the system powers off.
4. Momentarily press and release the front panel Power button to
power the system back on.
5. When the Power LED flashes, press the Power button twice
quickly.
3 System is off. 1. Momentarily press and release the front panel Power button to
power the system back on.
2. When the Power LED flashes, press the Power button twice
quickly.
4 Operating system is not
functioning normally. You can
log in as superuser remotely.
Type: # init 0
5 System has just been powered
on.
When the Power LED flashes, press the Power button twice
quickly.
6 No other alternatives are
available.
Press the Stop and A keys simultaneously. The Stop-A key
sequence causes a system abort that loses the system state and
might corrupt file systems.
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