Chapter . Choose an Upgrade Method
For users with an earlier version of Mac OS X already installed[1], the Tiger installer offers three upgrade options:
Upgrade Mac OS X (the default upgrade method)
Archive and Install
Erase and Install.
You will select one of these methods later, when you run the installer (see Perform a Customized Upgrade), but you should know about them now, because the method you choose will determine some of the other preparatory steps you must take. Most users will opt for the default choice, assuming that Installer Knows Best. In an ideal world, this would be the most painless upgrade. Unfortunately, with every new system upgrade, some users who choose this method run into serious problems—especially if they don’t prepare for ...
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