Does "Erase All Content And Settings" do a secure erase?

Discussion in 'iPhone Tips, Help and Troubleshooting' started by Luba, Sep 29, 2009.

  1. Luba macrumors 6502a

    Luba

    Joined:
    Apr 22, 2009
    #1
    Does "Erase All Content And Settings" do a secure erase? If yes, what type? Random characters or zeros? And does it do it once or 3x, 7x? It takes about 2 hours to erase a 16Gb iPhone 3G so I am thinking it probably is a secure erase and perhaps it's doing 3x. I would think zero'ing out or random'ing out the data would take much less than 2 hours for one go-around since to zero out 200 Gb on a hard drive on a Mac only takes 40 minutes.
     
  2. -aggie- macrumors P6

    -aggie-

    Joined:
    Jun 19, 2009
    Location:
    Where bunnies are welcome.
    #2
    It's a secure erase with zeros, but how many times I have no idea.
     
  3. intrepid00 macrumors 6502

    Joined:
    Sep 28, 2008
    #3
    Unless you got state secerts where a goverment will throw thousands and thousands of dollars at your device to maybe pull of a few bits of info a single pass of 0 writes is good enough.

    As for the erase all, it pretty much leaves the system drive alone so it isn't a complete wipe of 0s from start to finish.
     
  4. EarthDawn macrumors 6502a

    EarthDawn

    Joined:
    Feb 18, 2008
    Location:
    Long-eye Land, NY
    #4

    Thats it in a nutshell
     
  5. aerodoc macrumors member

    Joined:
    Aug 10, 2009
    #5
    I don't think this is true for the 3GS. It just deletes a key code and is completed almost instantly. When I did it on the 3G it took a while since it actually erased data.
     
  6. sfditty macrumors regular

    Joined:
    Nov 21, 2008
    #6
    This is my experience also, though I'm not sure if it's a 3G/3GS difference or a 2.x/3.x difference.
     
  7. Luba thread starter macrumors 6502a

    Luba

    Joined:
    Apr 22, 2009
    #7
    So a secure erase is not available on the 3GS or not available because of upgraded OS 3.1??
     
  8. aerodoc macrumors member

    Joined:
    Aug 10, 2009
    #8
    Secure erase is just different on the 3GS, that's all. It should not be called "erase" in my opinion since it really doesnt do that. But either way, you should feel confident someone else cannot recover the data.
     

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