selling macbook
I purchased a macbook pro about a year and a half ago and haven't been happy with it. I've decided to sell it. I deauthorized in iTunes, wiped the hard drive with 7 passes, then reinstalled Yosemite, and it is at the beginning screen where it asks to select a language.
I looked at another discussion in the support community and it says that when selling a Macbook the original operating system that came with it should be installed on it when selling it. I don't believe that I had Yosemite installed on it when I got it, but not sure what I had or how to reinstall the previous system?
Also, since the OS came preinstalled with the macbook (I didn't get a backup CD), the operating system is included under my apple ID in the app store. If a person buys my macbook and wants to do a fresh install, how do they do so since it wont be associated with their apple ID? Is there a way to transfer it?
MacBook Pro, OS X Yosemite (10.10.2)