DVD ROM Drive mounting confusion

[Daniel Haude <dunno@stoptrick.com>]

Hello,

in my box I have a DVD-ROM drive and a DVD burner. I ide-scsi'd both of
them (because I occasionally use multi-session DVDs which, when using
the ATAPI driver, are not mountable any more if the last session is
beyond a certain position). This sould make the drives appear as
/dev/scd0 and /dev/scd1. However, regardless of whether I mount
/dev/scd0 or /dev/scd1, I always get the disk in the DVD burner (hda)
mounted and never the one in the DVD ROM (hdb).

Hints, anyone?

Attached below is the output of dmesg and cdrecord -scanbus, all of
which looks fine to me:

dh@daniel:~$ dmesg | grep hd
Kernel command line: root=/dev/hdc3 ro hda=ide-scsi hdb=ide-scsi
ide_setup: hda=ide-scsi
ide_setup: hdb=ide-scsi
    ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:pio, hdb:pio
    ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:pio, hdd:pio
hda: _NEC DVD_RW ND-3500AG, ATAPI CD/DVD-ROM drive
hdb: TOSHIBA ODD-DVD SD-M1802, ATAPI CD/DVD-ROM drive
hdc: SAMSUNG SV1604N, ATA DISK drive
hdc: attached ide-disk driver.
hdc: 312581808 sectors (160042 MB) w/2048KiB Cache, CHS=19457/255/63,
UDMA(100)
hda: attached ide-scsi driver.
hdb: attached ide-scsi driver.
dh@daniel:~$ cdrecord -scanbus

Linux sg driver version: 3.1.25
Using libscg version 'schily-0.8'.
scsibus0:
        0,0,0     0) '_NEC    ' 'DVD_RW ND-3500AG' '2.18' Removable CD-ROM
        0,1,0     1) 'TOSHIBA ' 'ODD-DVD SD-M1802' '1034' Removable CD-ROM
        0,2,0     2) *
        0,3,0     3) *
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *
dh@daniel:~$