What's so compelling about FreeBSD?

[Chuck Swiger]

On Oct 16, 2006, at 10:45 AM, Simon Gao wrote:
> I have a few FreeBSD machine from 4.x to 5.x. I have asked people  
> how to
> upgrade them to latest version 6.x cleanly. All I was told is that I
> need to wipe them out and reinstall. However, this is not the case  
> with
> Gentoo Linux.

It's not the case with FreeBSD either.
Read the fine Handbook, or /usr/src/UPDATING...

-- 
-Chuck