So let me guess…you bought a second hand Mac computer for a great price and you did not ask or the seller if he/she had the original intall discs and now you have a machine that displays it’s previous owner’s name, which annoys the hell out of you.
The first thing you need to do is create a user account (PLEASE) as Administatror.
After that you can change the name by going into System Preferences > Sharing and on the top “Computer Name” You just type the name you want it to read.
Also you can do the same trick on Terminal…which I recognize that some of you hate messing with it, but I also understand that others have a lot of fun.
sudo scutil –set HostName new_hostname
Simply replace new-hostname with any name you want your hostname to be changed to, like MacPowerPC.
sudo scutil –set HostName MacPowerPC (press enter)
You will be asked for admin password:
In addition to HostName, LocalHostName and ComputerName can be changed.
It’s worth taking a look at this too – http://support.apple.com/kb/HT1428
I found this post very interesting for second hand buyer. No password, no root, no cd? No problem! – http://www.macobserver.com/tip/2003/06/16.1.shtml
If you guys have some tricks about changing name or something similar, please leave on comments. Thank you for sharing :)