IMHO: I'd burn in the bigger drive for a month or two (to prevent an
early failure) and then put the OS on it since it is the newest drive...
Why trust your OS and settings/configuration to an old drive...

(AND) If the old drive can't be trusted with your data, I'd ditch it or
back it up a lot...

(This is the type of question you can get lots of different answers.......)

                                            Rick Glazier

On Behalf Of John Freibergs
> Something that I left out on my original post is that both drives are
> 7200rpm but the 40Gb has a 2Mb buffer and the 120Gb has an 8Mb buffer.  Does
> that affect the choices?

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