I've performed this task many times without any data loss. Just use the
software that comes with the drive to transfer the files and all will be
well. I usually use Maxtor, but I imagine the WD software and instructions
are equally good. The software and other support are available at their
site: http://support.wdc.com/download/index.asp
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I have an existing 10gb hard drive and need to upgrate. I bought a 40gb
WD hard drive and would like to make it a slave to the 10gb hd.  I do not
want the hassle of having to move all of my existing programs, data  etc
to the larger drive for fear of loosing someting I negleted to move.

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