Technical information

Performing a clean installation of system software
This section describes how to perform what is commonly called a “clean” installation of system
software. A clean installation allows you to discover which item in your System Folder is causing a
problem. A clean installation creates a brand new System Folder and saves everything in your original
System Folder in a different location. You can then reinstall system extensions, control panels, and
other special software one at a time from the old System Folder to the new System Folder. This
procedure allows you to determine which item in the old System Folder was the source of the
problem.
Perform a clean installation if you can’t determine what is damaged in your System Folder (especially
if you think any special software, such as control panels, system extensions, or custom utilities, may
be causing the problems you’re experiencing). You should also perform a clean installation if you’re
still having problems with your computer after you’ve reinstalled system software by performing a
normal installation.
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