ide-scsi with 2 drives

[Robert Epprecht <epprecht@solnet.ch>]

Hello

Up to now I had one hd and one dvd writer and everything worked fine.
Now I have added a second hd and a dvd rom drive:

/dev/hda   hd
/dev/hdb   dvd writer
/dev/hdc   hd
/dev/hdd   dvd rom

A short test with another OS (no, it's debian woody ;-) without ide-scsi
seems to do fine with all of them.

The trouble starts when I want to use ide-scsi to burn cds or dvds.
This time I boot sid (but I don't think this makes the difference)
with 'hdb=ide-scsi' as kernel parameter in grub menu.lst (it's a 2.4.24
kernel). I can mount the dvd writer as /dev/scd0, but I cannot mount
/dev/hdd. I tried /dev/scd1, which (to my big surprise) mounts the
same drive as /dev/scd0.

I have tried appending 'hdb=ide-scsi hdd=ide-scsi' as kernel parameters,
and a couple of other things, but had no success yet. I must be doing
something wrong...

So before I post error messages of everything I tried please tell me
what kernel parameters (and syntax) I should try in grub.

BTW: I do not really care if /dev/hdd (the dvd rom) runs with
     ide-scsi or without, as long as it works.

Thanks a lot for any help,
Robert Epprecht.