change previous owner's name FOREVER!!!

[lorcar]

I bought a second hand slightly used Rmbp

I was sure I had deleted every sign of previous owne
but few seconds ago i opened TERMINAL for the first time
and I read

Last login: Fri May 10 21:51:32 on console
MacBook-Pro-di-PREVIOUSOWNERNAME:~ MYNEWLOGIN$

i cant believe it!!!
plz help me to make this retina MY computer!

 

[siurpeeman]

my suggestion would be to reinstall mac os x from scratch. boot into recovery, erase your hard drive, reinstall mac os x.

 

[jafingi]

Yes. ALWAYS format a used computer. What if he had installed a keylogger (know it's far out) or something.

So boot into recovery and start from scratch.

 

[lorcar]

is there a step by step guide for superdummies?

 

[andy9l]

is there a step by step guide for superdummies?

From Apple themselves: http://support.apple.com/kb/ph11273

Your 'startup disk' they refer to will likely be called Macintosh HD (or something similar).

 

[adnbek]

Did you change the name here?

 

[lorcar]

Did you change the name here?

thanks! this is how I did!

 

[WoodNUFC]

You should reinstall OS X. At least, I would. But then again, I've never sold a laptop without wiping the hard drive first.

 

[jafingi]

thanks! this is how I did!

I would still strongly suggest you to reinstall the whole thing! There is definitely much more of the previous owner's data left on the machine.

Data that in theory can become a security breach. You don't know what this guy have had installed/surfed online. So please format.

It takes one hour, and your Mac will be brand new.