Ok, ok, I see I started confusion out there.

First thanx for your answers, but...

I don't want to transmit the whole dmesg output, but perhaps
there are some "hidden" hints. Here it is:
(Please don't flame me:)

NetBSD 1.3.1 (AMIGA) #0: Fri Apr 17 17:17:45 CEST 1998
    root@curve:/usr/src/usr/src/sys/arch/amiga/compile/AMIGA
Amiga 4000 (68060 rev.1 CPU/MMU/FPU)
real  mem = 46137344 (5632 pages)
avail mem = 41525248 (5069 pages)
using 294 buffers containing 2408448 bytes of memory
memory segment 0 at 8000000 size 2800000
memory segment 1 at 7c00000 size 400000
memory segment 2 at 0 size 200000
mainbus0 (root)
clock0 at mainbus0: CIA B system hz 100 hardware hz 709379
Calibrating delay loop... 21/1024 us
a34kbbc0 at mainbus0
ser0 at mainbus0: input fifo 512 output fifo 32
par0 at mainbus0
kbd0 at mainbus0: CIA A type Amiga
ms0 at mainbus0
ms1 at mainbus0
fdc0 at mainbus0: dmabuf pa 0x1f7974: dmabuf ka 0x2df3974
fd0 at fdc0 unit 0: 3.5dd 80 cyl, 2 head, 11 sec [9 sec], 512 bytes/sec
idesc0 at mainbus0
scsibus0 at idesc0: 8 targets
sd0 at scsibus0 targ 0 lun 0: <ST51080A, , 14.1> SCSI2 0/direct fixed
sd0: 1033MB, 2100 cyl, 16 head, 63 sec, 512 bytes/sect x 2116800 sectors
sd1 at scsibus0 targ 1 lun 0: <QUANTUM, FIREBALL_TM3840A, A6B.> SCSI2
0/direct fixed
sd1: 3681MB, 7480 cyl, 16 head, 63 sec, 512 bytes/sect x 7539840 sectors
aucc0 at mainbus0
audio0 at aucc0
zbus0 at mainbus0: i/o size 0x04000000
grfcv0 at zbus0 pa 0x40000000 man/pro 8512/34
grf5 at grfcv0: width 640 height 480 colors 16
ite5 at grf5: rows 60 cols 80 repeat at (30/100)s next at (10/100)s has
keyboard
grfcv: CyberVision64 with 4MB being used
cbsc0 at zbus0 pa 0xe90000 man/pro 8512/12: address 0x2f1f400: FAS216,
40MHz, SCSI ID 7
scsibus1 at cbsc0: 8 targets
probe(cbsc0:1:0): max sync rate 10.00Mb/s
sd2 at scsibus1 targ 1 lun 0: <QUANTUM, FIREBALL1080S, 1Q09> SCSI2
0/direct fixed
sd2: 1042MB, 3835 cyl, 4 head, 139 sec, 512 bytes/sect x 2134305 sectors
cbsc0: !MSGOUT
cbsc0: SCSI bus reset
cbsc0: !MSGOUT
cbsc0: !MSGOUT
cbsc0: SCSI bus reset
cbsc0: !MSGOUT
probe(cbsc0:5:0): max sync rate 4.03Mb/s
sd3 at scsibus1 targ 5 lun 0: <SyQuest, SQ3105S, 2_04> SCSI2 0/direct
removable
sd3: drive offline
board at zbus0: pa 0xea0000 man/pro 18260/18 not configured
board at zbus0: pa 0xeb0000 man/pro 18260/12 not configured
le0 at zbus0 pa 0xec0000 man/pro 2167/201: address 00:60:30:00:1c:ce
le0: 16 receive buffers, 4 transmit buffers
10 views configured
sd2(cbsc0:1:0): max sync rate 10.00Mb/s
warning found rdb->secpercyl(138) != rdb->nsectors(139) * rdb->nheads(1)
Partition 'fire0' geometry 1/139 differs from RDB 1/139
Partition 'fire2' geometry 1/139 differs from RDB 1/139
Partition 'fire3' geometry 1/139 differs from RDB 1/139
Partition 'fire4' geometry 1/139 differs from RDB 1/139
root on sd0a dumps on sd0b
root file system type: ffs
le0: excessive collisions, tdr 19

This is ouptut is produced after starting with
loadbsd -an2 -I2 kernel

I don't know wether I set the "I"-option correctly. My CD-Rom
has SCSI-address 2. (Inhibit sync negotiation. 
Option value is bit-encoded targets.) ????

And I set the uk (unkown device) option when compiling.

When I try
mount_cd9660 -o ro /dev/cd[02][ac] /mnt
the error message:
mount_cd9660: : Device not configured
appears.

What did I wrong?

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