Re: 2.2.1 doesn't detect ATAPI cdrom

Jens Axboe (axboe@image.dk)
Sun, 31 Jan 1999 19:26:19 +0000

gsh@tantalus.clark.net wrote:
>
> I just upgraded from 2.0.36 to 2.2.1. Under 2.0.36 my CDROM (properly
> jumperd as a master on the 2nd IDE chain) is not detected under
> 2.2.1:

> Jan 30 22:11:58 tantalus kernel: hdc: IRQ probe failed (0)
> Jan 30 22:11:58 tantalus kernel: hdc: IRQ probe failed (0)
> Jan 30 22:11:58 tantalus kernel: hdd: IRQ probe failed (0)
> Jan 30 22:11:58 tantalus kernel: hdd: IRQ probe failed (0)

I noticed that Alan has included a fall back to default IRQ in
his latest ac patch (2.2.1-ac2, I think). Could you try that?

> Using a command of "hdc=cdrom" on the boot line allows the CDROM to be
> detected properly.

It doesn't really detect it, you are forcing the kernel to believe that
it is a cdrom drive.

-- 
*  Jens Axboe <axboe@image.dk>
*  Linux CD-ROM Maintainer
* "The only thing that interferes with my
*  learning is my education." -- A. Einstein




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