Re: [2.1.80] boot and floppy driver problems.

Niels Kristian Bech Jensen (
Wed, 21 Jan 1998 22:31:46 +0100 (MET)

On Wed, 21 Jan 1998, Michael Elizabeth Chastain wrote:

> Hi Niels,
> > 1. If I build the kernel with SMP support it won't boot on my UP system
> > (SiS chipset, AMD486 processor). Commenting out ``SMP = 1'' in the
> > Makefile and rebuilding the kernel makes it boot OK.
> I have a similar problem on my IBM 486SLC processor. In my case,
> I have a floating point coprocessor that uses 'old IRQ13 error
> reporting'. An SMP kernel can't handle this and it panics in an
> unexpected way during bootstrap.
> Check your dmesg output and see if you have a similar coprocessor.
> That might be the problem.
My processor is a 100MHz AMD486DX4. I get the following output from dmesg:

CPU: AMD DX/4-WB stepping 04
Checking 386/387 coupling... Ok, fpu using exception 16 error reporting.

Med venlig hilsen / Best regards
Niels Kristian Bech Jensen