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I'm about to put my old MBP up for sale, so I re-installed from the recovery partition after wiping the drive. But when I rebooted from the recovery partition to double-check I'd deleted everything, it connected to my wifi network. I've got two questions:

  1. How do I remove my network credentials from the recovery partition?
  2. What other personal information is it storing without my knowledge, and how do I wipe it?
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Does command+option+p+r during boot erase those settings? That is how the PRAM is cleared. You should cycle it until you hear the reboot chime at least two times to be sure. – Kent Jan 22 '14 at 10:37
up vote 3 down vote accepted

The answer was indeed to reset the NVRAM by holding cmd-alt-p-r during boot. Cheers :)

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