Archive for August 27th, 2014

by Tom Nelson

OS X Yosemite is a free download that comes to your Mac from the Mac App Store in the form of an installer that starts up automatically. If you follow the onscreen instructions, you’ll end up with an upgrade install of OS X Yosemite on your startup drive. The process is quick, easy – and has a minor flaw.


Screen shot © Coyote Moon, Inc.

What if you want to perform a clean install, completely erasing your startup drive? Or perhaps you’d like to have the installer on a bootable USB drive, so you don’t have to keep downloading it every time you wish to upgrade one of your Macs?

The answer is you can’t, at least not if you follow the onscreen instructions. The problem is that the installer is deleted as part of the upgrade process. This means you can’t upgrade another Mac without downloading the installer again. It also means you don’t have an easy method of performing a clean install, because you don’t have a bootable copy of the installer.

Read more on About: Macs.

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