AAPL Stock: 110.38 ( + 0.8 )

Printed from

Apple issues EFI update for new 2013 Haswell-driven iMacs

updated 05:25 pm EDT, Tue September 24, 2013

Update fixes Boot Camp-related Windows install issues

Hours after the announcement of the Haswell-powered iMacs, Apple has released an Extensible Firmware Interface (EFI) update for the new models. The update brings the firmware on the new models to version 2.1, and "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." Additionally, the update guarantees that the system boots by default into OS X after a Windows 8 install.

The EFI specification defines a boot manager, a firmware negotiator that is in charge of implementing the OS loader and all necessary drivers. The boot configuration is controlled by a set of global NVRAM variables, including boot variables that indicate the paths to the loaders. Apple's implementation of EFI gives the user a choice of OSes to boot into upon system startup, if desired.

by MacNN Staff





Login Here

Not a member of the MacNN forums? Register now for free.


Network Headlines

Follow us on Facebook


Most Popular


Recent Reviews

Polk Hinge Wireless headphones

Polk, a company well-established in the audio market, recently released a new set of headphones aimed at the lifestyle market. The Hin ...

Blue Yeti Studio

Despite being very familiar with Blue Microphones' lower-end products -- we've long recommended the company's Snowball line of mics ...

ZTE Spro 2 Smart Projector

Home theaters are becoming more and more accessible these days, but maybe you've been a bit wary about buying a home projector. And h ...


Most Commented