HP Visualize J5000 hp Visualize J5000, J7000 workstations service handbook (a4 - Page 162

Invoking ISL from the Boot Console Interface, ISL User Commands

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Invoking ISL from the Boot Console Interface Perform the following steps to invoke ISL from the boot console interface: 1. Follow the directions in "Accessing the Boot Console Interface" earlier in this chapter, and then type the following at the prompt: Main Menu: Enter a command or a menu > boot Enter You are prompted: Interact with ISL (Y or N) > y Enter 2. Answering yes (y) causes the ISL to be loaded from the specified device. After a short time, the following prompt appears on your screen: ISL> ISL is the program that actually controls the loading of the operating system. By interacting with ISL, you can choose to load an alternate version of the HP-UX operating system. For example, if the usual kernel (/hp-ux for 9.05, and /stand/vmunix for 10.0) on your root disk (fwscsi.6.0) has become corrupted, and you wish to boot your workstation from the backup kernel (/SYSBCKUP for 9.05, and /stand/vmunix.prev for 10.0), type the following at the ISL> prompt: ISL> hpux /SYSBCKUP Enter ISL> hpux /stand/vmunix.prev (for 9.05) Enter (for 10.0) ISL User Commands The following commands available in the ISL environment allow you to display and modify the boot characteristics of the system. D help - lists ISL command menu and available utilities. D display - displays the boot and console paths in Stable Storage and the current setting of the ISL Boot Flags. D primpath - modifies the primary boot path entry in Stable Storage. The entry in Stable Storage for the primary boot device begins at byte address 0 and ends at byte address 31. D altpath - modifies the alternate boot path entry in Stable Storage. The entry for the alternate boot device begins at byte address 128 and ends at 159. D conspath - modifies the console path entry in Stable Storage. The entry in Stable Storage for the console device begins at byte address 96 and ends at byte address 127. The entry for the keyboard and mouse devices begins at byte address 160 and ends at 191. 9-14 Boot Console

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9–14
Boot Console
Invoking ISL from the Boot Console Interface
Perform the following steps to invoke ISL from the
boot console interface
:
1.
Follow the directions in “Accessing the Boot Console Interface” earlier in this
chapter, and then type the following at the prompt:
Main Menu: Enter a command or a menu >
boot
<device>
Enter
You are prompted:
Interact with ISL (Y or N) >
y
Enter
2.
Answering yes (
y
) causes the ISL to be loaded from the specified device. After
a short time, the following prompt appears on your screen:
ISL>
ISL is the program that actually controls the loading of the operating system.
By interacting with ISL, you can choose to load an alternate version of the
HP-UX operating system.
For example, if the usual kernel (
/hp-ux
for 9.05, and
/stand/vmunix
for 10.0)
on your root disk (
fwscsi
.
6.0
) has become corrupted, and you wish to boot your
workstation from the backup kernel
(/SYSBCKUP
for 9.05, and
/stand/vmunix.prev
for 10.0
)
, type the following at the
ISL>
prompt:
ISL>
hpux /SYSBCKUP
Enter
(for 9.05)
ISL>
hpux /stand/vmunix.prev
Enter
(for 10.0)
ISL User Commands
The following commands available in the ISL environment allow you to display and
modify the boot characteristics of the system.
D
help –
lists ISL command menu and available utilities.
D
display
– displays the boot and console paths in Stable Storage and the current
setting of the ISL Boot Flags.
D
primpath
– modifies the primary boot path entry in Stable Storage. The entry
in Stable Storage for the primary boot device begins at byte address 0 and ends
at byte address 31.
D
altpath
– modifies the alternate boot path entry in Stable Storage. The entry for
the alternate boot device begins at byte address 128 and ends at 159.
D
conspath
– modifies the console path entry in Stable Storage. The entry in
Stable Storage for the console device begins at byte address 96 and ends at byte
address 127. The entry for the keyboard and mouse devices begins at byte ad-
dress 160 and ends at 191.