Apple releases macOS Sierra 10.12
September 20, 2016
Tim Yager
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Today Apple releases its latest operating system, macOS Sierra (10.12). Soon all Macs purchased from Apple will come with macOS Sierra preinstalled; previous versions of OS X cannot be installed. If you're considering an upgrade to the latest OS release, be sure to review the information below.

What’s new

Before you upgrade to macOS Sierra

  • Before performing any upgrade, always back up your computer using CrashPlan or the backup system provided by your local IT support provider (e.g., local Time Machine backup).
  • Go to the macOS Sierra Known Issues page on the IS&T Software Grid to check for software compatibility. Staff should consult with their department’s IT support provider to determine when to upgrade.
  • MIT-owned machines should be upgraded by downloading macOS Sierra from the Apple App Store or via Casper for managed Macs.
  • Personally-owned machines can be upgraded via the Apple App Store.

Upgrade resources

Hardware requirements

If you have questions or need assistance, please contact the IS&T Service Desk at or 617.253.1101.