reinstall or just change name

[David Fletcher]

On Fri, 2015-01-23 at 11:12 +0100, Gary J. Kirkpatrick wrote:
> I am selling my little laptop.  Should I reinstall the operating
> system, which I presume would be a better way to remove my files
> (albeit imperfect) or should I just change the user name/password?

I'd feel inclined to use Boot and Nuke

http://www.dban.org/

first, then re-install.

Dave