Apple Releases EFI Update for New Late 2013 iMac Models to Address Boot Camp Install Issues

imac_2013_colorFollowing today's launch of updated iMacs, Apple has released an iMac (late 2013) EFI Update 2.1 for the new machines.

This update is recommended for iMac (late 2013) models. This update addresses an issue which may cause a black screen to appear when installing Windows 7 or Windows 8 using Boot Camp Assistant if both an external optical drive and USB thumb drive are connected to the system. This update also ensures that the system will boot by default into OS X after installation of Windows 8.

The 8.7 MB update requires OS X Mountain Lion v10.8.4 (12E4022) or later, suggesting that at least some new iMacs may need to be updated with the current OS X 10.8.5 upon delivery.

Apple's new iMacs include Intel's latest Haswell processors, improved graphics, faster PCI Express-based flash storage options, and the support for the new 802.11ac Wi-Fi standard making its way into the company's Mac products. The 21.5-inch model begins at $1299, with the 27-inch model starting at $1799.

Related Roundup: iMac
Buyer's Guide: iMac (Neutral)
Related Forum: iMac

Popular Stories

iOS 26

Everything New in iOS 26.1 Beta 1

Monday September 22, 2025 12:44 pm PDT by
Apple released the first beta of iOS 26.1 today, just a week after launching iOS 26. iOS 26.1 mainly adds new languages to Apple Intelligence, but there are a few other features that are worth knowing about. New Apple Intelligence Languages Apple Intelligence is now available in Danish, Dutch, Norwegian, Portuguese (Portugal), Swedish, Turkish, Chinese (Traditional), and Vietnamese. AirPo...
iPhone 17 Pro and Air Feature

Two iPhone 17 Pro and iPhone Air Colors Appear to Scratch More Easily

Friday September 19, 2025 10:02 am PDT by
As reported by Bloomberg today, some of the new iPhone 17 Pro and iPhone Air models on display at Apple Stores today are already scratched and scuffed. French blog Consomac also reported on this topic. The scratches appear to be most prominent on models with darker finishes, including the iPhone 17 Pro and Pro Max in Deep Blue, and the iPhone Air in Space Black. Images Credit: Consoma ...
apple tv 4k new orange

Next Apple TV Expected to Launch This Year With These New Features

Monday September 22, 2025 10:00 am PDT by
The next Apple TV is expected to be released later this year, and a handful of new features and changes have been rumored for the device. Below, we recap what to expect from the next Apple TV, according to rumors. Likely Features N1 Chip With Wi-Fi 7 Last year, Bloomberg's Mark Gurman said the next Apple TV would be equipped with Apple's own combined Wi-Fi and Bluetooth chip, which is...
Apple Intelligence General Feature 2

iOS 26.1 Adds New Apple Intelligence Languages and Expands AirPods Live Translation

Monday September 22, 2025 11:15 am PDT by
With iOS 26.1, Apple Intelligence is gaining support for additional languages, including Danish, Dutch, Norwegian, Portuguese (Portugal), Swedish, Turkish, Chinese (Traditional), and Vietnamese. Apple announced plans to expand the languages that can be used with Apple Intelligence last year, and now the added language support is here. Apple Intelligence is now available in the following...
Apple Foldable Thumb

Foldable iPhone Like 'Two Titanium iPhone Airs' Joined at the Hinge

Monday September 22, 2025 2:16 am PDT by
Next year's rumored foldable iPhone will showcase an ultra-thin design resembling "two titanium iPhone Airs side-by-side," according to Bloomberg's Mark Gurman. Writing in the Q&A section of his latest Power On newsletter, Gurman says Apple's first foldable device will be "super thin and a design achievement," combining Apple's thinnest iPhone form factor with cutting-edge folding...
iPhone 17 Pro and Air N1 Feature

Some iPhone 17, iPhone 17 Pro, and iPhone Air Users Experiencing Intermittent Wi-Fi Issue

Monday September 22, 2025 8:44 am PDT by
Apple's latest iPhone models launched on Friday, and some early adopters of the devices are experiencing intermittent Wi-Fi issues. Affected customers say Wi-Fi connectivity periodically cuts out on the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air, with hundreds of comments about the issue posted across the MacRumors Forums, Reddit, and the Apple Support Community over the...
iOS 26

iOS 26.0.1 Coming Soon, Likely With iPhone Air and iPhone 17 Pro Fix

Thursday September 18, 2025 9:17 am PDT by
Apple is preparing to release iOS 26.0.1, according to a private account on X with a proven track record of sharing information about future iOS versions. The update will have a build number of 23A350, or similar, the account said. It is likely that iOS 26.0.1 will fix a camera-related bug on the new iPhone Air and iPhone 17 Pro models. In his iPhone Air review, CNN Underscored's Henry T. ...

Top Rated Comments

thaifood Avatar
157 months ago
Honestly people and no excuse to whine about this.

They found a problem, issued a fix in a timely manner, and notified the public. Sounds like good business practice to me.

Grow up.
Score: 5 Votes (Like | Disagree)
jafingi Avatar
157 months ago
Apple hasn't even shipped these and there's an EFI update. Why doesn't Apple just install the update before they ship them ?

Why ?

Because they have been sitting in a warehouse for a while now.

Probably the same for the MB Pro's and Air's.

And the Mac Pro.

Because they have to mass produce these machines before making them available. It's not like they begun making them one week ago. Maybe started 1-2 months ago, and in the meantime, they have been testing them and found the issues hence addressing them in an update now :-)
Score: 5 Votes (Like | Disagree)
zecks420 Avatar
157 months ago
Apple hasn't even shipped these and there's an EFI update. Why doesn't Apple just install the update before they ship them ?

Why ?

Because they have been sitting in a warehouse for a while now.

Probably the same for the MB Pro's and Air's.

And the Mac Pro.
Because its called having to build up stock.... and if they didnt people like you would bitch about not being enough available... like they magically appear on store shelves. Please... Find something else to complain about. As you so obviously put it... their not even out yet so I doubt your "Inconvenienced" by hitting the update button..

----------

This wouldn't have happened if S.... Nevermind:D

Too damn funny. But i agree. lol
Score: 2 Votes (Like | Disagree)
Battlefield Fan Avatar
157 months ago
This wouldn't have happened if S.... Nevermind:D
Score: 2 Votes (Like | Disagree)