I recently bought a new (to me) MacBook Pro with Lion installed. The previous owner hadn’t had the time to completely wipe everything from the machine since I bought it 3 hours after I first responded to his Craigslist post. So, I found myself in need of starting completely fresh and Googled it. I found some disjointed posts in various Mac-related forums, but nothing that said “This is how you do it”. So, this is how you do it:
- Restart your Mac and hold down the Command-R. That will open up the “Mac OS X Utilities” app (seen here).
- Select “Disk Utility” from the menu and proceed to erase the Macintosh HD drive. This completely wipes the Macintosh HD drive, so be really sure you want that to happen.
- When Macintosh HD is erased, quit the Disk Utility app and select “Reinstall Mac OS X” from the Utilities window.
- The reinstallation process is pretty well thought out, so it will guide you the rest of the way through.
This may not seem like much, but I couldn’t find anywhere that explained the whole process.