At Sun, 7 Mar 2010 13:41:57 -0500 CentOS mailing list <centos at centos.org> wrote: > > Hi! > > I've got a 32-bit Centos installed on an AMD Phenom II X2 processor and > I'm interested ni making it 64 bit instead. But I'd sure like to avoid > having to go back thru the whole installation again... in part because > I've got sotware RAID set up and I'm assuming that I can't do a fresh > install into it without having to re-configure the whole thing. Doing a fresh 64 install on an existing 32-bit system with software RAID does not mean you have to re-configure the RAID system. Are you using LVM? Have you broken up your root, /boot, and /home (and possibly /var/<mumble>) as separate file systems (except /boot) as LVM logical volumes? If so, it is easy. I did this recently. I created fresh root, /usr, and /var filesystems (lvcreate ...), then installed 64-bit CentOS 5.4. I retailed the old 32-bit CentOS 4.8 system tree and copied the config files needed to bring the 64-install up to speed.. > > So, is it possible (and practical) to upgrade a 32 bit system to 64? Not recomended to 'upgrade'. > > Thanks! > -- Robert Heller -- Get the Deepwoods Software FireFox Toolbar! Deepwoods Software -- Linux Installation and Administration http://www.deepsoft.com/ -- Web Hosting, with CGI and Database heller at deepsoft.com -- Contract Programming: C/C++, Tcl/Tk