HP 3000 Manuals HP 3000 Manuals
Activating and Deactivating Autoboot and Autosearch Functions
Enabling and disabling the autoboot and autosearch flags determines one
of four boot device and console selections for system initialization.
Hardware interprets the selections as follows:
Manual (autoboot off and autosearch off). Ask for the path to the boot
device. Use the path that is indicated. Initialize the path given, and
boot from it.
Bootsearch (autoboot off and autosearch on). Search for a boot device.
(Devices are searched from the smallest to the largest physical address
on the processor's bus.) If the boot device has an incorrect data
format, search for the next boot device. If no boot device exists, or
all have the incorrect data format, execute manual selection.
Autoboot (autoboot on and autosearch off). Try to boot from the primary
boot device specified in stable storage. If the boot device does not
exist or has an incorrect data format, execute manual selection. Once
booted, execute (performed by ISL) an autoboot file, which contains a
command sequence, to bring up the operating system without operator
intervention. If the autoboot file does not exist, prompt the operator
for the utility command.
Autosearch (autoboot on and autosearch on). Try to boot from the boot
device path stored in stable storage. If the boot device does not exist
or has an incorrect data format, execute the boot search selection. Once
booted, execute (performed by ISL) an autoboot file, which contains an
autoboot sequence, to bring up the operating system without operator
intervention. If the autoboot file does not exist, prompt the operator
for the utility command.
To enable or disable these features, use the AUTOBOOT and AUTOSEARCH
commands. Enter one or both of the commands and the desired setting
(ON/OFF) at the ISL prompt. The system responds with a message
indicating the flag status:
ISL> AUTOBOOT ON
Autoboot is ON (enabled).
ISL> AUTOBOOT OFF
Autoboot is OFF (disabled).
ISL> AUTOSEARCH ON
Autosearch is ON (enabled).
ISL> AUTOSEARCH OFF
Autosearch is OFF (disabled).
For more information on the autoboot and autosearch flags, refer to
Appendix C .
Modifying boot paths in stable storage
The ISL commands PRIMPATH, ALTPATH, and CONSPATH are available for
placing new primary boot path, alternate boot path, or console boot path
information in stable storage. The changes need to be in stable storage
to execute the autoboot sequence properly in the event of a power outage
or other serious failure.
CAUTION The commands described in the above paragraph may disrupt normal
system functions if used inappropriately. For this reason, do
not attempt to use these commands without assistance from
Hewlett-Packard service personnel.
To execute any of these three commands, enter the command with its
appropriate parameter or enter Return after the command and wait to be
prompted for further input:
ISL> ALTPATH 6/4.3.0
or
ISL> ALTPATH
Enter alternate boot path: 6/4.3.0
To withdraw a command (without changing the path), enter Return after
entering the command without any parameter. For example,
ISL> ALTPATH
Enter alternate boot path: Return
Invalid Input.
Trailing zeros are not required when a boot path is entered:
ISL> PRIMPATH 2/4.0.0
ISL> CONSPATH 2/4.1.0
If an improper path format is entered, or you have withdrawn a command as
shown above, the system issues an Invalid Input message. Then ISL
prompts for a new command:
ISL> PRIMPATH 240
Invalid Input.
Displaying current boot path, autoboot, and autosearch settings
Since an improper path keeps the system from booting, use the DISPLAY
command to check the paths entered. Double check these entries against a
recent I/O map from the ISL IOMAP utility or a configuration listing from
the SYSGEN utility. For more information on SYSGEN, refer to Chapter 4
(*).
The DISPLAY or DI command lists the autoboot and autosearch settings, the
primary boot path, the alternate boot path, and the system console path
held in stable storage. Use the DISPLAY command to verify that correct
information resides in stable storage. Example 3-3 demonstrates using
the ISL[REV BEG] DISPLAY command. This is an example from a Series 949
system. The boot paths may vary, depending on the system.[REV END]
__________________________________________________________
| |
| |
| ISL> DISPLAY |
| |
| Fastsize value is 0000000F |
| |
| Autoboot is ON (enabled) |
| |
| Autosearch is OFF (disabled) |
| |
| Primary boot path is 4.1.0.0.0.0.0 |
| Primary boot path is (hex) 4.1.0.0.0.0.0 |
| |
| Alternate boot path is 4.5.0.0.0.0.0 |
| Alternate boot path is (hex) 4.5.0.0.0.0.0 |
| |
| System console path is 4.2.0.0.0.0.0 |
| System console path is (hex) 4.2.0.0.0.0.0 |
| |
| Last utility launched from ISL was START |
| ISL> |
| |
__________________________________________________________
Example 3-3. Displaying an example of ISL Settings
Setting fastsize
If fastsize is set to the wrong value, you cannot do installs or updates.
The only value that is acceptable is "F." If you try to do an update or
install with fastsize set to the wrong value, you will receive an error
message that reads UTILITY REQUIRES MORE MEMORY THAN IS CONFIGURED.
Consider the following example.
ISL> DISPLAY
Fastsize value is 00000003
:
This fastsize value is invalid. You must reset it to "F"; therefore, at
the ISL prompt, enter Fastsize F, as in the following example.
ISL> FASTSIZE F
If you changed the value of fastsize, you must reset the system for the
new value to take effect. For more information on resetting the system,
refer to Chapter 2 .
Listing autoboot file contents
To list the contents of the current autoboot file, enter either
LISTAUTOFL or LSAUTOFL at the ISL prompt:
ISL> LISTAUTOFL