Upgrade from 32-bit to AMD-64?

[Xin LI]

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Hi, Karl,

Karl Denninger wrote:
> I have a machine that can run either (proved, I can boot the AMD-64
> release disk)
> 
> Can I SOURCE UPGRADE from one to the other?  That is, is it possible to
> do a "make buildworld", "make buildkernel" and then "make installkernel"
> and wind up with AMD64 instead of the 32-bit code?
> 
> Or must I reinstall?
> 
> It APPEARS I can run most 32-bit code on a 64-bit system.  Not all
> works, but most does.

This is sort of "doable" but "highly recommend you not to do that"
thing.  The simplest way to do 32-bit to 64-bit upgrade would be to
backup your data, install from scratch, then restore data; mixing 32-bit
and 64-bit stuff together, especially without 32-bit stuff moved to the
right place, is among the most terrible mess you wanted to avoid.

Online "upgrade" can be done if you have your 64-bit world/kernel built
and installed into a separate directory (i.e. make world kernel
DESTDIR=/path/to/a/temp/place), then drop into single user mode, then
tar then pipe to another tar to extract the whole thing to /, but this
is really a "foot, gun, shoot" thing.

Cheers,
- --
Xin LI <delphij at delphij.net>	http://www.delphij.net/
FreeBSD - The Power to Serve!
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