Switching to AMD64 from I386 using make world

Kostik Belousov kostikbel at gmail.com
Sat Sep 19 20:19:29 UTC 2009

On Sat, Sep 19, 2009 at 10:06:43PM +0200, Roland Smith wrote:
> On Sat, Sep 19, 2009 at 10:30:35AM -0700, JonathanGilpin wrote:
> > 
> > Hi,
> > 
> > I have an i386 system running and I want to switch to AMD64. Is this
> > possible using make world and a kernel recompile? If so, could someone point
> > me in the right direction as I'm getting errors on make depend on the kernel
> > compile..
> It should be possible. But you'd have to write the new kernel and userland to
> a separate partition or disk. And on the next boot you would have to boot from
> that partition/disk.
> Since most people do not have a separate partition handy, a better option
Use swap. This is well-known trick called miniroot.

> would be to make a full backup of your data and install amd64. Keep in mind
> that amd64 binaries are somewhat larger on disk than i386 ones, so you might
> want to adjust partition sizes. You will also have to install all your ports
> again as amd64 binaries.

Not system-management 32bit applications should mostly work on amd64.
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