Isl Environment - HP Model 745 - VME Workstation Handbook

ISL Environment

ISL provides the means to load the operating system. ISL also provides an offline platform
to execute diagnostic and utility programs contained in the LIF volume on the boot device
when the operating system is not loaded.
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 from 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 offline diagnostic programs, as described later in this chapter.
• Provide automatic booting of the operating system after
power-on or reset.
Troubleshooting
Dealing with a Boot Failure
4-6