Rookie needs help please

[gametech]

A calibration only write is very safe, even if something goes wrong. A write entire can turn your pcm into a useless brick if you get a disconnect or voltage drop or other problem at the wrong time. That is the simplified version of the difference. The complete version would make for a VERY long post.

[gtstorey]

Use write calibration unless you have a known reason to write entire.

[GMJim]

Thanks gametech and gtstorey. I'll use calibration as suggested. I didn't expect to get this smart this quick but I've got a long way to go!
Jim