How to format/erase my sold MBP-r?

[Noctilux.95]

Hey guys,

Just sold my Macbook Pro Retina and upgraded to a faster one. Now I need to wipe my HD clean to hand over the computer to the new owner.
I went to disk utility but couldn't figure the best way to do this. Any suggestions would be appreciated it.

PS: I'm running Yosemite

Thanks!

 

[crashoverride77]

Hey guys,

Just sold my Macbook Pro Retina and upgraded to a faster one. Now I need to wipe my HD clean to hand over the computer to the new owner.
I went to disk utility but couldn't figure the best way to do this. Any suggestions would be appreciated it.

PS: I'm running Yosemite

Thanks!

https://support.apple.com/en-gb/HT201065 (at point 5 just follow the Mavericks instructions)