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I have a MacBook Pro from early 2011 which was shipped to me with a DVD that I could use to reformat the machine, which I do not have with me at the moment. I have upgraded to OS X Yosemite though, and have reformatted the newer Retina MacBooks which used an Internet connection to download the OS.

Since I do not have the disc handy, will I be able to do this later reformatting on my older MacBook Pro?

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If your MacBook Pro (early 2011) was updated with Macbook Pro EFI Firmware Update 2.3 then you will be able to use OS X Internet Recovery and not need the DVD that shipped with your Mac. Also have a look at: OS X: About OS X Recovery

  • hmm I wonder how I can verify I have the needed firmware? – erikvold Jul 30 '15 at 20:16
  • @erikvold, What's the output from Terminal of the following command? system_profiler SPHardwareDataType | grep 'ROM' – user3439894 Jul 30 '15 at 20:29

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