Which Method Is Right for You?
The choice of Upgrade Mac OS X, Archive and Install, or Erase and Install comes down to a few simple factors.
Choose Upgrade Mac OS X if:
Choose Archive and Install if:
Note: If you choose Archive and Install, be sure the Preserve Users and Network Settings checkbox is selected (as it should be by default).
Choose Erase and Install if:
Double Serious Don’t Say We Didn’t Warn Your Warning! Take Control ’s publisher, Adam Engst, who is a major wuss when it comes to erasing hard disks, has asked me to remind you that Erase and Install really will destroy all the data on your hard disk (or partition) prior to installing a fresh copy of Tiger. If anything were to go wrong with your backup, you would be very unhappy. (Adam would have at least two independent backups before starting). So check and double-check your backups before you proceed!
All things being equal, I prefer Erase and Install because it offers the best combination of robustness and ease of upgrading. It does require, in most cases, that you have a second hard drive in order to back up your primary volume; even if you’re backing up your data to a separate partition, you will want a second drive to hold your data during the partitioning process. But then, I can think of many good reasons to purchase a second drive—especially if it’s an external FireWire drive, which makes a superior backup device.