I wasn't planning on using my tumblr for these ends but I have a technical question.
I want to completely re-install my macbook pro using the installation discs I got when I bought it. I know there is a key-combination that can be pushed during the boot-up with the installation disc in the tray to erase all the data on the device and get a 100% clean re-install, but I forgot what that combination was.
If someone can help me that would be very much appreciated.









