Delete efi partition

[byair]

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?

Thanks for your help.

 

[Detrius]

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.

 

[MagicBoy]

Sorry, don't understand. It's gibberish!

 

[byair]

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.

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?

 

[MagicBoy]

What had lead you to believe the EFI partition is faulty?

 

[byair]

What had lead you to believe the EFI partition is faulty?

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.

 

[Detrius]

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.