“Apple has designed OS X so that one can just upgrade to the next version, ‘over the top,’ seamlessly,” John Martellaro writes for The Mac Observer.
“With this kind of upgrade, all user data, settings and accounts remain as before, and that works for most users most times,” Martellaro writes. “However, there are occasions when a user needs to do what’s called a ‘Clean Install.’ This is like setting up a Mac as if it first came out of the box and then personal data is restored.”
“There are some users who suspect that a Clean Install is a good way to approach a complete new version of OS X. Over time, a lot of cruft, that is, unused extensions, app support files, preferences and other files in your Library folder or System Library folder can become troublesome or even a security issue, like Java. Or just take up too much space,” Martellaro writes. “In addition, sometimes the normal housecleaning process with apps like Spring Cleaning and App Zapper can’t solve a particularly difficult issue, and the only way to get a fresh start is a Clean Install.”
“The Complete Guide to an OS X Clean Install of El Capitan” is here.
MacDailyNews Take: There’s nothing like a clean install – except for a new Mac!