1. Erase and Install
PROS: provides a clean installation, allows yout o reset partitions, can install on any partition;
CONS: all data on selected partition will be erased

2. Update
PROS: installer will update Mac OS X 10.0.x or later, maintaining preferences, fonts, applications, and files
CONS: requires that Mac OS X 10.0.x or later is installed; Existing problems with the OS may not be fixed by the updater.

3. Archive and Install
PROS: creates archive of current system directory and installs a new System directory optionally preserving user and network settings
CONS: New system directory will not have any custom files from current System directory

Which one of these is most simliar to Clean Install option in the Mac OS 9 installer?
ANSWER: #3, Archive and Install

By Jason