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Mac OS High Sierra

Apple has recently released its High Sierra (10.13) operating system. At this time, we recommend that users do not update to this operating system without contacting CTS first.

High Sierra has several ways to facilitate the upgrade and different configuration options for users to choose. If a user makes certain configuration choices during the upgrade, they could potentially make their data permanently inaccessible. Often it is best to wait until the Operating System is live for a few weeks to determine if significant bugs exist within the software. Please contact CTS if you have any questions about upgrading.

Known Issues

After updating to High Sierra, some users are unable to boot to their desktop screen and instead receive an image of a folder with a question mark over it. More information about this issue can be read about here: https://discussions.apple.com/article/HT204323


macOS High Sierra is compatible with all Macs that can run macOS Sierra.

  • iMac (Late 2009)
  • MacBook (Late 2009)
  • MacBook Air (Late 2010)
  • MacBook Pro (Mid 2010)
  • Mac mini (Mid 2010)
  • Mac Pro (Mid 2010)

An overview of all new upcoming features can be found here: https://www.apple.com/macos/high-sierra-preview/