On Feb 12, 2009, at 5:31 PM, 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?
Sure, it's possible, given sufficient toolchain knowledge, time, and
skills, but it's not a sensible thing to do aside from experimentation
and learning purposes.
The recommended course is to determine the platform which best suits
your requirements and the available hardware: ie, are you doing
database stuff, SSL, or arbitrary-precision math which would really
benefit from the 64-bit architecture; does the machine have more than
3 GB of RAM; does the machine have hardware (like a graphics card)
which has better 32-bit drivers, etc.
It APPEARS I can run most 32-bit code on a 64-bit system. Not all
works, but most does.
Right, the vast majority of 32-bit binaries should work just fine on a
64-bit platform....
Regards,
--
-Chuck
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