Delete efi partition

Discussion in 'MacBook Pro' started by byair, Nov 1, 2011.

  1. byair macrumors newbie

    Joined:
    Oct 30, 2011
    #1
    Hi,

    EFI restore CD is not applied to my MBP, If I delete EFI partition can I have it back via reinstall Mac OS X? :confused::confused:

    Thanks for your help.
     
  2. Detrius macrumors 68000

    Joined:
    Sep 10, 2008
    Location:
    Asheville, NC
    #2
    Huh?

    Are you talking about deleting the 200MB EFI volume at the front of the drive? Don't do that. That's necessary for firmware updates.
     
  3. MagicBoy macrumors 68040

    MagicBoy

    Joined:
    May 28, 2006
    Location:
    Manchester, UK
  4. byair thread starter macrumors newbie

    Joined:
    Oct 30, 2011
    #4
    Yes, it seems that something wrong with the 200MB EFI, I have to restore EFI but no EFI restore CD can work on my MBP. If I erase the whole Hard Disc and reinstall Mac OS, can EFI be restored by this way?
     
  5. MagicBoy macrumors 68040

    MagicBoy

    Joined:
    May 28, 2006
    Location:
    Manchester, UK
    #5
    What had lead you to believe the EFI partition is faulty?
     
  6. byair thread starter macrumors newbie

    Joined:
    Oct 30, 2011
    #6
    Mac OS start up and run slower than before after EFI updated.
    I try to install WIN 7 x64 many times by Bootcamp Assistant but no device drivers found.
     
  7. Detrius macrumors 68000

    Joined:
    Sep 10, 2008
    Location:
    Asheville, NC
    #7
    That's not going to be a firmware problem, and even if it were, you can't downgrade. If your machine chimes, the firmware restoration cd won't do anything for you.
     

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