Erasing hard drive - Disk utilities
I am trying to sell my MacBook Pro. I have followed all the steps necessary to prepare the device to sell, except wipe the hard drive clean. I would like to do a secure wipe to ensure none of my information is accessible. However, while in Disk Utilities, after I click on the disk I would like to erase, then the Erase tab, the necessary buttons/tabs for security options aren't illuminated. I'm not able to actually click on anything under the erase tab. Please help, I have a buyer ready!
MacBook Pro with Retina display