
Troubleshooting
Introduction to Troubleshooting
4-3
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.
Summary of Contents for 9000 Series 743
Page 6: ...Electrostatic Discharge ESD Precautions vi ...
Page 17: ...1 1 1 Product Information ...
Page 31: ...2 1 2 Functional Description ...
Page 58: ...Functional Description Power Distribution 2 28 Figure 2 9 Power Distribution Diagram ...
Page 59: ...3 1 3 Configuration ...
Page 91: ...4 1 4 Troubleshooting ...
Page 125: ...5 1 5 Field Replaceable Units ...
Page 159: ...6 1 6 Reference Documentation ...