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#1 (**permalink**) 02-16-2008, 05:23 AM

Hi,

I am running OpenBSD on an AMD K5-166 now.
I found an AMD K6-200. Can I just switch the CPU, without needing to
re-install the OS? Do I need to make any changes in the OS itself
after the switch?
I know in Windows I wouldn't, but I am not sure about the inner
workings of UNIX.

Thanks in advance.

#2 (**permalink**) 02-16-2008, 05:23 AM

On Thu, 04 Mar 2004 02:03:58 -0800, DJ_Farid wrote:

> I am running OpenBSD on an AMD K5-166 now.
> I found an AMD K6-200. Can I just switch the CPU, without needing to
> re-install the OS? Do I need to make any changes in the OS itself
> after the switch?

No.

#3 (**permalink**) 02-16-2008, 05:23 AM

On 4 Mar 2004 02:03:58 -0800, dj_farid@hotmail.com (DJ_Farid) wrote:

>Hi,
>
>I am running OpenBSD on an AMD K5-166 now.
>I found an AMD K6-200. Can I just switch the CPU, without needing to
>re-install the OS?

yes.

greg

--
You do a lot less thundering in the pulpit against the Harlot
after she marches right down the aisle and kicks you in the nuts.

#4 (**permalink**) 02-16-2008, 05:23 AM

DJ_Farid wrote:
> Hi,
>
> I am running OpenBSD on an AMD K5-166 now.
> I found an AMD K6-200. Can I just switch the CPU, without needing to
> re-install the OS? Do I need to make any changes in the OS itself
> after the switch?
> I know in Windows I wouldn't, but I am not sure about the inner
> workings of UNIX.
>
> Thanks in advance.

Former posts probably mean:

No, you don't need to.

vs.

Yes, you can.

Only limitation that might exist is for programs that are compiled on
your machine specifically for your cpu. But then again, AMD k6 is most
likely backwards compatible with a AMD k5, so no limitations really.

Niels

#5 (**permalink**) 02-16-2008, 05:23 AM

Uwe Dippel <udippel@uniten.edu.my> wrote in message news:<pan.2004.03.04.10.56.05.881130@uniten.edu.my >...
> On Thu, 04 Mar 2004 02:03:58 -0800, DJ_Farid wrote:
>
> > I am running OpenBSD on an AMD K5-166 now.
> > I found an AMD K6-200. Can I just switch the CPU, without needing to
> > re-install the OS? Do I need to make any changes in the OS itself
> > after the switch?
>
> No.

No, as in No I can't just switch the CPU? Or No as I do not need to
make any changes in the OS after the switch?

Thank you for your answer but I think it was a little too short for me
to understand.
Please explain yourself.

#6 (**permalink**) 02-16-2008, 05:23 AM

On Thu, 04 Mar 2004 07:15:31 -0800, DJ_Farid wrote:

> Thank you for your answer but I think it was a little too short for me
> to understand.

*You* formulated your post, didn't you ?
And you received appropriate answers. I think in any language, first you
blurb, then you ask. Any single answer refers to your last question.

#7 (**permalink**) 02-16-2008, 05:23 AM

"DJ_Farid" <dj_farid@hotmail.com> wrote in message
news:88343fd0.0403040715.2114ec8@posting.google.co m...
> Uwe Dippel <udippel@uniten.edu.my> wrote in message
news:<pan.2004.03.04.10.56.05.881130@uniten.edu.my >...
> > On Thu, 04 Mar 2004 02:03:58 -0800, DJ_Farid wrote:
> >
> > > I am running OpenBSD on an AMD K5-166 now.
> > > I found an AMD K6-200. Can I just switch the CPU, without needing to
> > > re-install the OS? Do I need to make any changes in the OS itself
> > > after the switch?
> >
> > No.
>
> No, as in No I can't just switch the CPU? Or No as I do not need to
> make any changes in the OS after the switch?

AFAIK, there should be no problem with changing the CPU.

The only situation I can imagine this giving a problem is with a custom
kernel with a very restricted set of CPU families (I586_CPU, I686_CPU etc).
By default all are enabled - i.e. if you're using the default kernel, you
should be fine.

No doubt I will be corrected if wrong

.

HTH,

Steve
http://www.fivetrees.com
http://www.sfdesign.co.uk

#8 (**permalink**) 02-16-2008, 05:23 AM

Uwe Dippel wrote:
>> Thank you for your answer but I think it was a little too short for
>> me to understand.

> *You* formulated your post, didn't you ?
> And you received appropriate answers.

The original poster asked no less than three yes/no questions in his post,
including topic. You replied with a single "no", without pointing out which
question you replied to. You even quoted both the questions in the post.
Simply snipping everything but the question you actually answered would have
made things much clearer. But as it stands I agree with DJ_Farid that your
reply is more confusing than clarifying.

#9 (**permalink**) 02-16-2008, 05:23 AM

> Former posts probably mean:
>
> No, you don't need to.
>
> vs.
>
> Yes, you can.
>
> Only limitation that might exist is for programs that are compiled on
> your machine specifically for your cpu. But then again, AMD k6 is most
> likely backwards compatible with a AMD k5, so no limitations really.
>
> Niels

A few weeks ago I installed and configured OpenBSD 3.4 as a router/firewall
on a brand new P4 with all modern equipment. Then I removed the HD and the
NICs and put them in an old PIII and the machine started right up without
any trouble. I didn't have to change anything and this impressed me
immensely.
Then I took the old HD from the PIII with Windows XP on it and put *it* in
the new P4... well, let's just say I wasn't equally impressed...

/PP

#10 (**permalink**) 02-16-2008, 05:23 AM

On Sat, 06 Mar 2004 10:20:05 +0000, PP wrote:

> Then I took the old HD from the PIII with Windows XP on it and put *it* in
> the new P4... well, let's just say I wasn't equally impressed...

Astonished ?

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Can I change CPU without reinstalling OpenBSD ??