Dual Opterons don't see all memory

[Eric Osterweil]

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On Sep 26, 2007, at 10:35 PM, Matthew Seaman wrote:

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> Erich Dollansky wrote:
>
>> Paul Schmehl wrote:
>>> --On September 26, 2007 9:06:57 PM -0700 Eric Osterweil
>>> <eoster at CS.UCLA.EDU> wrote:
>>>
>>>> On Sep 26, 2007, at 8:57 PM, Erich Dollansky wrote:
>>>>
>>>>> Eric Osterweil wrote:
>>>>>
>>>>
<snip>
>>>> Ahh... To do this, do I just specify the CPUTYPE in the /etc/ 
>>>> make.conf
>>>> as:
>>>> CPUTYPE=amd64
>>>> ?
>>>>
>>> No.  Add options SMP to GENERIC or use the SMP conf file that's
>>> already there (and includes GENERIC).  Then recompile the kernel per
>>> the handbook.
>>>
>> he still has to set the CPU type also in this config file to amd64.
>
> If the OP has installed FreeBSD i386 then changing the CPU type in
> /etc/make.conf won't magically get him FreeBSD amd64 --- it will just
> get him FreeBSD i386 optimized for AMD processors running in 32bit
> mode.
>
> As far as I know, there is no simple way to start with a 32-bit
> system and the FreeBSD sources and recompile and reinstall everything
> into a 64-bit system.  (Although the opposite direction is apparently
> possible on 7-CURRENT, but it's a guru-only level of difficulty.)
>
> The best and most effective answer here is to start by downloading
> an amd64 installation CD and redo the whole thing from scratch.
>
> 	Cheers,
>
> 	Matthew

Ahh... gotcha.  I guess it's good that I asked before I loaded the  
machine up and invested a lot of time in it.  I can nuke it if that's  
what has to be done.

Thanks,

Eric

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