How to Upgrade Your Mac to Mac OS Sierra Step By Step

If you are running Mac OS X Snow Leopard or Lion, chances are you can't sync your iPhone 6s or any devices running iOS 9. Other sites such as YouTube also may not function properly. Before getting starting, make sure your system can run on Mac OS Sierra here

San Diego Mac Repair recommends you have at least 4GB of RAM in your Mac. San Diego Mac repair can upgrade your RAM for you, or if you're tech savvy this can be done by ordering memory from crucial.com or Amazon.com and replacing it yourself. To find out how much memory your Mac has, turn on your Mac and select the Apple logo at the top left and select About this Mac. Your Mac will have Memory and the size in GB.

Backup your Mac! It is imperative to backup your Mac before upgrading to the latest operating system. When the software is being installed, it is overwriting the system files and issues can arise in this process. It is performing a technical surgery. See our Time Machine Backup page to follow step by step how to backup your Mac here.

Now that your backed up, your ready to update your Mac OS Sierra. This process will generally take 1-3 hours depending on age of machine and speed of Internet.

  1. Close all windows
  2. Open App Store (Blue App with "A" inside)
  3. Select Updates at the top middle of the page.
  4. Select free upgrade inside the Mac OS Sierra Banner.
  5. Your Mac will begin to download the Installer
  6. The installer should open automatically or you can open it manually in Finder/Applications
  7. Follow the steps to install Mac OS Sierra and return when it's complete (Your Mac may restart multiple times)
  8. Once Mac OS Sierra is installed, follow the Windows carefully. Sign into iCloud and setup your user.
  9. Enjoy the latest operating system! If your Mac is running a little slower, see our Mac Troubleshooting page here. Call us below if you have any questions. San Diego Mac Repair is based in La Jolla, CA.