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Date:      Thu, 28 Jun 2007 21:25:14 -0700
From:      Garrett Cooper <youshi10@u.washington.edu>
To:        eculp@unixmania.com
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Upgrading from an old athlon to a new 64 bit one.
Message-ID:  <468489AA.3090402@u.washington.edu>
In-Reply-To: <20070628114304.512m6zqigwkg088c@intranet.unixmania.com>
References:  <20070627145452.ytifppt70oc480s8@intranet.unixmania.com>	<20070628011057.5a0d90b5@gumby.homeunix.com.>	<20070628101239.6fs4qrpz8k8kkosw@intranet.unixmania.com>	<20070628170202.43e64182@gumby.homeunix.com.> <20070628114304.512m6zqigwkg088c@intranet.unixmania.com>

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eculp@unixmania.com wrote:
> Quoting RW <fbsd06@mlists.homeunix.com>:
>
>> On Thu, 28 Jun 2007 10:12:39 -0500
>> eculp@unixmania.com wrote:
>>
>>
>>> What I am trying to do is compile an amd64 kernel, install it and
>>> see what happens ;) I can always go back to the generic kernel
>>> compiled in sys/i386.
>>
>> amd64 and i386 are different platforms in the same sense that sparc64
>> and ppc are different platforms. An AMD 64 is not back-compatible to
>> pentium pro code  when it's in 64-bit mode. Whilst 32-bit binaries can
>> be run on the amd64 platform, they need special handling, you can't
>> just mix-and-match world and kernel platforms.
>
> Thanks, RW.  I had assumed that and had hoped to run my make 
> buildworld, make buildkernel, mergemaster, make installkernel and make 
> installworld then upgrade all ports.
>
> The problem is that I haven't been able to figure out, how to build 
> using all amd64.
>
> Again very dumb on my part, I'm sure.
>
> ed
As RW has said before it's possible. However, it's better and no doubt 
quicker to go about starting from scratch.
-Garrett



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