I am not aware that you can partition without erasing. The new partitions mean that the entire addressing system changes and in so doing, all previous addressing is erased. Once the file system changes the computer no longer knows what was there. And your partition could pass right through the middle of a files physical location. jj On 10-Nov-05, at 10:26 PM, g4-request at listserver.themacintoshguy.com wrote: > Partitioning Software > To: g4 at listserver.themacintoshguy.com > Message-ID: <p06002000bf999bd9ca30@[192.168.0.100]> > Content-Type: text/plain; charset="us-ascii" ; format="flowed" > > I'd like to re-partition my HD and install a new OS. What is the best > application that will re-partition my HD without erasing all my > files. Also, is it possible to re-format as well? > > Thanks > Fred