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Chapter 2 41
Troubleshooting
Dealing with a Boot Failure
Here is an example of path number notation:
• boot p1 [Enter] attempts to boot from the second path in a list generated by a
previous search command.
Supported Boot Paths
SCSI devices are bootable when connected to any SCSI port on the system. Workstations
can only boot from the built-in LAN port. The workstation can be booted from the CD ROM
drive for software installation.
Intermediate System Loader (ISL) Environment
The ISL environment provides the means to load the operating system (HP-UX)
environment. The ISL environment also provides an offline platform to execute diagnostic
and utility programs from a boot device when HP-UX does not load.
The ISL program is the first program loaded into main memory from an external media
(LAN, disk, or tape) and launched by the initial program loader (IPL) routine during the
Boot Administration environment.
The ISL environment provides the following capabilities:
• Execute user-entered commands to modify boot device paths and boot options in stable
storage.
• Run off-line diagnostic programs and utilities.
• Provide automatic booting of the HP-UX operating system after power-on or reset.