Extensible Firmware Interface is a specification that defines a software interface between an operating system and platform firmware

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Why I can't get out of EFI firmware update 2.7 on my MacBook Pro?

Performing the EFI firmware update to version 2.7 these days, I noticed that my 15" MacBook Pro (bought March 25, 2012) resets for five times before booting effectively. Even then, I can notice that ...
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MacBook Pro 2010 won't boot after EFI upgrade

I have updated my MacBook Pro (Core i5, early 2010) with system update to new EFI version, and now after startup it just shows the gray screen and doesen't react on keyboard (just plays the boot ...
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Intel EFI shell on Mac

I would like to try Intel's EFI shell. How can I (build and) install EFI Shell on Mac? I've seen prebuilt binary, but I'd like do build it myself and I don't trust stuff from file-sharing sites. ...
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Why does Disk Utility create EFI partitions on external disks?

A technical told me about the EFI partition that... ...it's only there in case your computer will do an EFI update so the update files can be loaded onto the EFI partition. This is consistant with ...
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Lion won't start after EFI update

I installed the new EFI update for my MBA Mid 2011 (the software updater said it is recomended). The update went fine and restarted the mac afterwards. Then while booting the apple logo turns into a ...
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MacBook Pro will not wake from sleep after installing third party application

I installed an application called Air Parrot that uses air play with an Apple tv to mirror or extend the desktop. I noticed that after I installed it, I am no longer able to wake my Mac from sleep. ...
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How to replace a Mac hard drive with a Windows hard drive and run Windows Vista

History: My macbook hard disk failed after i dropped it and I need to replace my hard drive. I have a hard drive from a PC laptop that has Windows Vista 64-bit installed on it. Objective: I want to ...
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Does the iMac EFI Update 1.7 change how NetBooting works?

I have a NetBoot server to manage all the Macs in my office. However, when I started a weekly backup of one of my iMacs last week, after rebooting and holding N, I saw the blinking globe for a few ...
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Disk Utility says: “Error: This disk doesn't contain an EFI system partition.”

After a clean install of Lion, followed by partitioning which again was followed by a installation of Ubuntu, I noticed some error messages of Disk Utitity. When verifying the volume I get told that ...
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How do I boot into the EFI firmware shell?

I'd like to experiment with the EFI shell on a MacBook Pro 2010 model. I am unable to find the keyboard sequence to hold on boot. Does someone know what the sequence is, do I need to boot from my ...
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What cool things can you do if you hack EFI

I think I'm right in thinking Intel Macs use EFI. I heard rumours that you can create low-level password protection and even install a shell. Info is sparse and limited. Have any power users hacked ...