Invoking Isl From The Boot Console Interface; Isl User Commands - HP Visualize J5000 - Workstation Service Handbook

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 >
You are prompted:
Interact with ISL (Y or N) >
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> hpux /SYSBCKUP
ISL> hpux /stand/vmunix.prev

ISL User Commands

The following commands available in the ISL environment allow you to display and
modify the boot characteristics of the system.
help – lists ISL command menu and available utilities.
display – displays the boot and console paths in Stable Storage and the current
setting of the ISL Boot Flags.
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.
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.
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.
9–14 Boot Console
<device>
boot
Enter
y
ISL>
(for 9.05)
Enter
(for 10.0)
Enter
Enter
prompt: