If I use FileVault and DON'T use Secure Erase, is it recoverable?

Discussion in 'OS X Mountain Lion (10.8)' started by macpokerstars, Mar 2, 2013.

  1. macrumors member

    Joined:
    Sep 29, 2010
    #1
    Hi,

    The title says it all.
    If I am using FileVault, and if I don't use Secure Erase, where are those deleted files located, physically on my hard drive?

    Are they recoverable?

    Do I need to use secure erase to be sure nothing can be recovered?

    Since I have an SSD, I am a bit concerned that secure erase is quite bad for the SSD.

    Thanks in advance
     
  2. macrumors G3

    Joined:
    Jul 23, 2002
    Location:
    Sol III - Terra
    #2
    TO answer your main question, the files could be recovered by someone who knows your password. But in that case they would have access to all your files anyway.

    I don't think you need to use secure erase if you are using FileVault.
     
  3. macrumors 68030

    benthewraith

    Joined:
    May 27, 2006
    Location:
    Miami, FL
    #3
    Since you have an SSD, I would not recommend using secure erase, as it writes zeroes over the file it's deleting. I would recommend you enable trim if it's not already turned on and your drive is compatible. If it has an aggressive garbage collection, I wouldn't worry.

    Also, deleted files would remain encrypted regardless because of full drive encryption.
     
  4. macrumors 601

    Mr. Retrofire

    Joined:
    Mar 2, 2010
    Location:
    www.emiliana.cl
    #4
    AFAIK, in FileVault 2, Apple encrypts your already encrypted encryption keys (encrypted with your hashed password) with a long random key. Because no one knows this random key, not even Apple, it is nearly impossible to recover the unencrypted data. This works like a OTP.
     

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