Factory resetting your MacBook is the best way to wipe all your personal data and get it ready for someone else.

Here's the thrilling conclusion to last week's episode, namely, how to properly reformat — erase — your old Mac's hard disk so its data can never be recovered.

However, this process can be quite time-consuming, and it’s easy to accidentally delete important files that are in active use. To avoid this issue, many Mac users prefer to use an automated tool that ...