Re: Hardware Question

Scott Ehrlich wrote:
On Tue, 31 Jul 2007, Nils Kassube wrote:


Donald D Henson wrote:

1. Does i686 always mean that the referenced processor/machine/platform
is 64-bit?

No, it is 32 bit. The CPUs which are referred to by "i686" are usually 32
bit CPUs. See <http://en.wikipedia.org/wiki/I686>.


2. Does i386 always mean 32-bit?

Yes.


3. If the 'uname' command reports that the machine/processor is i686
and that the platform is i386, does this mean that I am restricted to
32-bit software?

Yes and no. If your CPU understands 64 bit instructions, they should work,
but what you get as 64 bit software probably needs the libraries compiled
for 64 bit Linux. If you want to have 64 bit Ubuntu, you need the AMD64
version.


One way to check your processor's 32 vs 64-bit capability:

- Try to boot or install a 64-bit version of an OS. If the OS sees a
32-bit processor, it will complain and instruct you to install the 32-bit
version.

Scott

Kind of the sink or swim technique, eh? Actually, that's my strategy.
But as I was working on my upgrade plan, I realized that I have no idea
which processors are 32-bit and which are 64-bit. After the upgrade, I
guess I'll know. Thanks, everybody.

Don Henson

Nils

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