Two recent Apple KB articles of note: 106605: Mac OS X 10.1: Do Not Reinstall After Using the Mac OS X Update 10.1.1 states: "You should not reinstall Mac OS X 10.1 ...
This built-in tool is a better option.
Migrate your OS to an SSD for faster performance and reliability. Learn step-by-step methods to clone or reinstall Windows safely without data loss.
MacOS includes a recovery partition that allows you to easily erase all data on your Mac and reinstall your OS without an installation disc. In this article we will ...