Recently, I have bought Apple SSD128GB (Toshiba HG3 serie) to upgrade my MBP 15" early 2011. It's a second hand drive of my friend so I want to do secure erase by using Parted Magic for improving the performance as factory reset. I have heard about Parted Magic that it will do secure erase by sending ATA command to drive's controller (If I'm not wrong) but some people mentioned OS X Lion has Trim support that needs not to do secure erase. Now I don't know which ones is correct answer and can I use Parted Magic to secure erase this drive. Please give me your ideas.