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Re: Sarge and Athlon 64



Dave Ewart wrote:
On Thursday, 13.07.2006 at 22:40 -0400, hendrik@topoi.pooq.com wrote:

Would the above advice still apply if I wanted to use my 32 bit
software and data with a Socket 754 Sempron CPU i.e. I would use a
Sempron which has AMD64 support built in, but I would not use the 64
bit capability ?
It's always worth remembering that amd64 CPUs can run x86 code
completely natively and so one can always "ignore" the fact that they
are amd64 CPUs and just run a normal x86 distribution: that will work
fine.

You'd be correct in saying that you "won't be using the 64-bit
capabilities" of the CPU, but those capabilities are only useful in
certain contexts and you simply may not need them!
If you have a 64-bit Debian in one partition, and then you install
a 32-but Debian in another, and it sets up grub, will the
32-bit installation recognise the already present 64-bit installation,
and will the presumably 32-bit grup properly boot it?

Maybe :-)

The long version: I tried doing something like the above a while ago and
it's a rather tricky setup to *maintain*, although it may work at first.
i.e. What happens when you start updating kernels?

Can't help you any more with this one, anyway, sorry Hendrik...

Dave.

I did it the other way round and when installing the 64 bit debian, grub found my 32 bit install and added it to menu.lst.

I have successfully maintained both systems current on unstable for over a year now. Most of the upgrading can be done from within the chroot, although occasionally I have to boot into the i386 partition for some packages that need /proc mounted in the install script. At least this gives me an opportunity to check it still boots as expected :).

HTH

Wackojacko



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