NOTE: Not available on N-Class and A-Class systems.
Nonvolatile memory stores system activity parameters, including a circular
queue of the last six ISL utilities executed. This information remains intact,
even through system failures.
To read the contents of NVM, enter READNVMnn at the
prompt, where nn is the location to be read:
Stable storage stores boot path information along with other
critical system parameters. Like NVM, stable storage maintains its
information through system crashes and failures. Unlike NVM, stable
storage maintains its information even if the memory card, containing
stable storage, is removed from the backplane.
To read the contents of stable storage, enter READSSnn at the prompt, where nn is the location to
be read:
The ISL utility CLKUTIL reads and sets the battery backed-up hardware
clock. This clock maintains Greenwich Mean Time (GMT) independently of the
software clock that is displayed when you enter the ISL START utility
or any of the other ISL utilities that support the software clock. (Refer to
Example 3-7 for an example of the software clock interaction.). The
CLKUTIL utility, therefore, reads the date and time that were
previously set with CLKUTIL, but does not itself reflect the changes
that you may make while in any other ISL utility.
The hardware clock should be set to GMT if the clock displays
are to be correct on the booted system. The hardware clock provides
the basis for time displays that are part of some ISL utilities.
When the local time is entered during particular ISL utilities,
the system computes an offset and stores it in stable storage. During
a boot, the GMT and this offset are combined to produce the local
time, displayed on the console.
To read or set the hardware clock, enter:
ISL> clkutil
The system responds with the following banner:
SYSTEM FOR ISL STAND ALONE UTILITIES. [IHO, SPU LAB]
Version 1.0
****************************************************************
****** ******
****** CLKUTIL ******
****** ******
****** (C) Copyright Hewlett-Packard Co 1987, 1988, 1990 ******
****** All Rights Reserved ******
****** ******
****** HP shall not be liable for any damages resulting ******
****** from the use of this program. ******
****** ******
****** Version A.02.00 ******
****** ******
****************************************************************
To read the clock, enter r at the CLKUTIL prompt:
enter command : (r) read clock, (s) set clock (e) exit> r
The system responds with a message similar to the following:
THU, SEP 16, 1999, 7:06:08 PM
To set the clock, enter s at the CLKUTIL prompt:
enter command : (r) read clock, (s) set clock (e) exit> s
The system responds with a message similar to the following:
Enter Date MM/DD/YYYY
11/16/2000
When the enter date prompt appears, enter the date in the correct
format: mm is a two-digit number, 1-12, representing the month;
dd is a two-digit number, 1-31, representing the day of the month;
and yyyy is a four-digit number representing the year. (You can also
enter just the last two digits for the year.)
The system continues by issuing the following prompt:
Enter Time HH:MM:SS
19:12:00
Enter the time using Greenwich Mean Time in 24-hour format.
The system requests verification of the adjusted date and
time by issuing a message similar to the following:
THU, NOV 16, 2000, 7:12:00 PM
ok (y/n)?y
Entering Y returns a message of:
clock set!
Enter command : (r) read clock, (s) set clock (e) exit>e
Entering N returns you to the enter date prompt.
Pressing Return at the enter command prompt returns you to the
ISL prompt.
Activating and Deactivating Autoboot and Autosearch Functions