Turning off autofill? Maybe using keychain?

Question

Hello! I'm selling my mac to a friend and have been altering preferences and files for him. But every time I go to change preferences it says "System Preferences requires that you type your password." and then prompts me to enter in Name and Password. Even after changing the user name when I go to change preferences again the old name is autofilled in the 'Name' box.
What I want is for either another name to appear or have no name come up. Any suggestions? I tried to mess with keychain a bit but that doesn't seem to work

Answer 1

This is the way I prepare old machines that came with OS X installed, which allows them to act just like one from the factory. First, boot with the Apple Hardware Test disk that came with the machine, run the extended tests, and make sure everything passes. Then, boot with the restore disk(s) that came with the machine (holding down the C key until you get a screen), erase and zero the HD. When that's finished, reformat it Mac OS Extended, install the OS 9 drivers (if the machine can boot into OS 9), and then restore the software.
See
http://docs.info.apple.com/article.html?artnum=31086 and
http://docs.info.apple.com/article.html?artnum=301408 for restoring details.
When finished, click on the restart button, holding down the CMD+S keys. This puts the machine into single-user mode and gives you an Unix command line terminal screen. When the text stops scrolling, type in this command and click the return key:
*shutdown -h now*
This shuts down the computer; the next time it is turned on, the Setup Assistant will appear and the new user will get to personalize it. This also alleviates the necessity of presetting any display parameters, internet and e-mail settings, etc. As long as the monitor can hook up to the machine, the OS will select a usable resolution and the user can use the Display prefpane to suit their needs. They'll also have to run Software Update and bring everything up to the latest version.
Do note that you should also include all software disks and manuals that came with the machine. If there are 3rd-party apps, you need to include those disks and manuals, but only for those you want to transfer to the new owner—keeping those on your new machine and the old one, most likely violates the terms of usage.
James Sedgwick says: "I'm simple so that's why I try and keep it simple, just boot off your OS X CD, zero the drive and shutdown, new owner will use the bundled CD(s) to set it up the way they want it, easy peasey."
To reset Leopard to the Setup Assistant, see http://www.macosxhints.com/article.php?story=2007110800450816