Disk Erase with SSD

Discussion in 'MacBook Air' started by LordTurtle, Feb 4, 2008.

  1. macrumors newbie

    Mar 7, 2007
    How does the SSD drive work with regards to Finders 'Secure Empty Trash' ??

    Once the file is written blanks/zeros/garbage is it then completely unrecoverable?

    I am right in assuming that SSD is a binary type storage (ie. once is it 'cleared' it can never be recovered) ... as opposed to a hard disk that can still have data recovered with fancy physical tools looking at the edges of the tracks.

    If these assumptions are correct, does that mean that Apple will change Secure Empty Trash to only 'clear' the sectors of a file once, instead of multiple writes?
  2. TEG
    macrumors 604


    Jan 21, 2002
    Langley, Washington
    Just like with magnetic media, using the rm command or emptying the trash just removes the UNIX link to the file. Technically the file is still there, the connection to the filesystem is just removed. Secure Empty Trash on the other hand actually clears those sectors before removing the link(s). So is will still work the same on an SSD.

    So I don't think the nomenclature will change, as it is still accurate.

  3. macrumors member

    Jan 28, 2008
    The Sandisk SSD say they comply with DoD 5220.22-M, I assume Samsung would too. Certainly it would still require multiple wipes, I believe. It's a good question.

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