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?