Re: [Fed-Talk] MacBook Pro Wierd Boot Behavior
Re: [Fed-Talk] MacBook Pro Wierd Boot Behavior
- Subject: Re: [Fed-Talk] MacBook Pro Wierd Boot Behavior
- From: "Link, Peter R." <email@hidden>
- Date: Tue, 17 Jan 2012 07:29:53 -0800
- Acceptlanguage: en-US
- Thread-topic: [Fed-Talk] MacBook Pro Wierd Boot Behavior
Tony,
With EFI passwords turned on, you're limited to booting from specific devices unless you enter the EFI password. Switching drives with FV2 on them is something I haven't tried (yet) but sounds risky because of how EFI controls the Mac, which affects how the internal disk operates, especially after converting to FV2.
On Jan 17, 2012, at 7:07 AM, Andreoli, Tony A USNUNK NAVAIR B1490, R215 wrote:
> Can someone explain this:
>
> For reference, both machines I mention have EFI passwords and FileVault 2 encryption.
>
> I have one MacBook Pro (15", 2011) that was acting up, so I pulled it's hard drive and stuck it in a 13" 2011 MacBook Pro to reformat. When done, I put the 13"'s original hard drive back in, but when it went to boot, all I got was the question mark folder. It wouldn't boot from a CD or the Lion thumbdrive. Finally, I booted with the Option key, which forced an EFI password prompt. I entered the password, which then brought me a prompt to unlock the hard drive. Once I entered the hard drive password, it booted just fine.
>
> So, I can understand why it would want the hard drive password after swapping drives back and forth, but why did it only prompt for it after entering the EFI password? Why did it act like a bad drive, and give no indication that I needed to unlock the drive? Had I not booted with the Option key down, I may very well have tried to reformat the drive, thinking there was a drive issue.
>
> Also, why would it not boot from either of the alternate medias? I tried C, cmd-opt-shift-del, and at the very least, I would expect if the internal hard drive came up with the question mark folder, it would fall back to any other bootable device it found.
>
> Any thoughts?
>
> Thanks,
> Tony
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Peter Link
Cyber Security Analyst
Cyber Security Program
Lawrence Livermore National Laboratory
PO Box 808, L-315
Livermore, CA 94550
email@hidden
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