What to do before selling MBA without restore CD/USB
I have a late 2008 MBA that I'm trying to sell.
I believe it came with Leopard but it's running OS X 10.8.2 Mountain Lion now.
I bought Mountain Lion on the App Store and I believe it's not transferrable. (Or is it? If it is, would it solve everything?)
Anyway, before selling it, I want to reset it to factory setting so that the buyer can start fresh as if it were new.
But I don't have the original Leopard restore CD or USB (whichever it came with since it has no CD drive).
Do I somehow have to get a copy of the Leopard CD or USB?
I know Genius Bar would do it for me but I have no time.
Is there a way around this?
Thanks in advance.