Update your Mac OS (free)

You should most definitely update your Mac’s operating system soon.

However!! Be aware that the download takes a long time (especially on home wi-fi) — mine took HOURS. And then the install, which is automatic, will take longer than a few minutes too. NEVER quit or shut down during an operating system update!

I suggest you plan to do the update when you can attend to your MacBook but you don’t need to be using it. You can do the download while you’re sleeping. Then restart to begin the upgrade itself.

OS X Mavericks now available as a free download (The Verge, Oct. 22)

To start the download, just open the Apple menu and select Software Update.  The free update should work for all of you — you have to be running OS X 10.6 or higher for it to work.