Alan McKinnon wrote:
> OK, so it's 32 bit on an amd64 you'll be doing
>  

Initially yes, I'll look into 64bit as need arises.....
> I would reconfigure the kernel and include things that you know ought to
> be there. Then move the disks over and see if it boots. Rinse, repeat,
> till it does.
>  

Well, more likely, break the mirror, pull a disk, and test on the new
machine, if it works, great, take the old machine down, and move the
remaining disk across and drop onto the network, and start the process
to change the cflags and emerge -e world...

If not, then most likely move the disk back, let the mirror rebuild, and
do a fresh install on new disks...
> Now the existing system should work with your new hardware and you can
> update your CFLAGS and 'emerge -e world' at your leisure.
>
> That's the theory at least anyway :-)
>
>  
Well, exactly. That is the theory. I want to know the likelihood of
success. I know that using mtune=k6-2 means it won't run on anything
before a k6-2, and most likely not on anything Intel, due to the symbols
and optimisations used. What I want is some idea of the chance it will
run on a *later* AMD processor. Will an Athlon honour the k6-2
optimisations?