How to erease all info in mbp

[pHeNom]

selling my mbp to my friend I want to delete all programs/apps/passwords/history on the computer. Basically clean slate.

How do I do that? Running Mountain Lion OS.

Thank you!

 

[vmachiel]

When booting up, hold option and go to the recovery partition. From there, launch disk utility, and erase your main drive partition. Make sure you choose OS X journaled (NOT case sensitive). Then exit out of disk utility and choose to reinstall OS X.

 

[ppcg4mac]

or you can use a...