Some 2012 iMac Users Unable to Install OS X Mavericks Developer Preview

Posted in Apple News, OS X on 11/06/2013 by J. Glenn Künzler

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With yesterday’s new developer preview of OS X 10.9 Mavericks, Apple has showed off a lot of great new features for the Mac Operating System. While the developer preview is easily installable and usable for most who attempt the process, however, some users of 2012 iMacs (myself included) are unable to proceed with the install.

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I’ve confirmed this on three late 2012 iMac systems that I have access to, and have confirmed the issue with other iMac users as well.. After downloading the Mavericks installer from the Mac App Store and launching it, the iMac reboots exactly as expected – but instead of launching into the Mavericks installer, user are instead presented with a grey “cancel” logo on a white background. Notably, this is the same error that users might encounter if they try to install an older version of OS X on a newer Mac that doesn’t have the necessary drivers to support the older OS X installer.

Even worse, the only way to bring the target partition on your Mac back to a usable state is to do a complete restore from backup – otherwise it keeps attempting and failing to boot into the Mavericks installer. It’s understandable that this is a beta, and that users accept the risks of attempting to install and use it for any purpose, but it is a disheartening situation nonetheless.

This is likely due to an early glitch in the beta that Apple will probably fix for the second developer preview – but it nevertheless remains extremely frustrating for developers who have paid $99 for access into the Mac Developer Program, only to find that they cannot install or use the new Mavericks preview. Notably, I was able to install the preview on a 2012 Mac Mini successfully.

Have any of you experienced this issue? Let us know! We’ve reached out to Apple’s Developer Support to see if they can provide a solution.


Author

J. Glenn Künzler

Glenn is Managing Editor at MacTrast, and has been using a Mac since he bought his first MacBook Pro in 2006. Now he's up to his neck in Apple, and owns an old iBook, a 2012 iMac with an extra Thunderbolt display for good measure, a 4th-generation iPad, an iPad mini, 2 iPhones, and a Mac Mini that lives at the neighbor's house. He lives in a small town in Utah, enjoys bacon more than you can possibly imagine, and is severely addicted to pie.