Installing Yosemite without Apple Id
I'm selling my iMac, and want to reinstall Yosemite, but it prompts me to input an apple id to do so. If I proceed, will this link my apple Id to the computer again? I don't want to go through the hassle of selling a computer with no OS, and explaining to them how to install it with their own ID. So is there a way to install yosemite without and ID/will using my ID bind it to the computer?
iMac, iOS 8.2