On Sat, Jun 30, 2007 at 09:37:23AM -0500, Javier Perez wrote:
How do I go from a FC6 i386 system to a FC7 x86_64 system without data loss?
Unfortunately, the only clean way is to back up your data and reinstall. (You could maybe do some craziness with an x86_64 rescue disk, but that seems like more work.)
When you *do* reinstall, I suggest making a separate /home partition and keeping all of your important data there. Then, next time something like this comes up, you can do a new install onto the system partition and carefully make sure that /home is not reformatted during install.