Originally published at: http://www.howtogeek.com/186860/how-to-reinstall-os-x-on-your-mac-wipe-your-drive-and-create-usb-installation-media/
Macs can automatically download and reinstall their operating system. This process normally keeps your personal files, but you can choose to erase them. You can also create USB installation media to speed up installing OS X on multiple Macs.
Been there, done that. Wifi was malfunctioning so a clean wipe fixed it all. Used my time machine backup then to restore all my files and settings, even my apps. Works like a dream now and I've never considered backups until my time machine actually came in handy
What a timely article. I was thinking of upgrading the hard drive in my Mini, and I wanted to find out what to do ahead of time so I can do a scratch install.
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