How to convert from i386 to amd64

Sean McNeil sean at
Mon Jul 12 16:54:34 PDT 2004

On Mon, 2004-07-12 at 16:40, George Mitchell wrote:
> > I started with an i386 installation on my machine and recompiled for
> > amd64.  Here is what I did:
> >
> > Made a kernel config file from generic one in /sys/amd64/conf. I called
> > mine AMD64.
> >
> > make TARGET_ARCH=amd64 buildworld
> > make TARGET_ARCH=amd64 KERNCONF=AMD64 buildkernel
> > make TARGET_ARCH=amd64 KERNCONF=AMD64 installkernel
> > cp /libexec/ /libexec/
> > reboot into single user mode.
> > make TARGET_ARCH=amd64 installworld
> >
> > This was really a big pain and I'd recommend installing from a CD.
> I'm planning to try this install on a Compaq Presario laptop, which is
> known to require a kernel patch to keep it from powering off when it
> probes the keyboard controller.  Under i386, I built a patched kernel
> on another i386 machine and wrote a CD-ROM with the new kernel.  If
> I make TARGET_ARC=amd64 in my amd64 kernel build directory and then
> put that kernel onto an amd64 install CD-ROM, do you think I will be
> able to go from there?

I've never made a release CD, so I'm not sure.  Hopefully someone else
can offer experience in doing that.

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