Datacom Systems J Class - Manual (Page 227)

D-10
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If you wish to interact with the Initial System Loader (ISL)
before booting your workstation, follow the directions in
“Accessing the Boot Console Interface” earlier in this appen-
dix, 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
Answering yes (y) causes the ISL to be loaded from the spe-
cified device. After a short time, the following prompt ap-
pears 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 or later, and
/stand/vmunix for 10.0 or later) 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
or later, and /stand/vmunix.prev for 10.0 or later), type the
following at the
ISL> prompt:
ISL> hpux /SYSBCKUP Enter (for 9.05 or later)
ISL> /stand/vmunix /stand/vmunix.prev Enter (for 10.0 or
later)
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If you do not know the locations of the bootable operating
systems on the various media in your file system, you can
find them with the search command.