Reinstall Mac HD after erasing disc.
I am trying to confirm that I was successful in erasing all of my data on my Mac Desktop computer. Apple support suggested that I reinstall Mac HD to confirm that no data remains on my Mac before I turn it in to be recycled. Support suggested that I "Turn on my Mac, then immediately press and hold these four keys together: Option, Command, P, R." However, I received the following message when I rebooted: "The Recovery Server Could Not be Contacted.
Any other ideas?