Hello. Before I give my computer to somebody, I need to reformat the drive. Under the Security Options, one can choose 1-pass, 7-pass, 35-pass to zero out the data. Supposing that somebody very technical from Apple wants to access very important data from the drive, will that person still be able to access the data after I made a 7-pass zero out formatting? I know there are people who are not concerned about such security issue. I just want to know if 7-pass is sufficient to make the data non-retrievable. Also, will zero out the data many times cause damage to the drive? Thanks.