Just now I made a fresh installation of Natty on my desktop. Earlier I was using Maverick with a separate home partition. While installing I selected / for maverick partition and selected nothing for earlier home. Now I noticed that earlier home is recognized as just another partition and a new home has been created. How can I set earlier home as home for natty?
That is really a good question, many people can face this problem, see this link http://www.psychocats.net/ubuntu/separatehome this may help you.
an alternative reference to do the same thing: http://embraceubuntu.com/2006/01/29/move-home-to-its-own-partition/