I recently installed the Yamaha CD-writer. When booting, the kernel
shows the following error:

----- cut here -----
ahsc0 at mainbus0
scsibus0 at ahsc0: 8 targets
probe(ahsc0:1:0):  Check Condition on opcode 0x0
    SENSE KEY:  Aborted Command
     ASC/ASCQ:  Message Error

cd0 at scsibus0 targ 1 lun 0: <YAMAHA, CRW4260, 1.0g> SCSI2 5/cdrom removable
ahsc0: target 2 now synchronous, period=208ns, offset=8.
cd1 at scsibus0 targ 2 lun 0: <TOSHIBA, CD-ROM XM-3801TA, 3386> SCSI2 5/cdrom removable
ahsc0: target 3 now synchronous, period=212ns, offset=12.
sd0 at scsibus0 targ 3 lun 0: <iomega, jaz 1GB, J^77> SCSI2 0/direct removable
sd0: 1021MB, 1021 cyl, 64 head, 32 sec, 512 bytes/sect x 2091050 sectors
ahsc0: target 4 now synchronous, period=208ns, offset=8.
st0 at scsibus0 targ 4 lun 0: <HP, C1533A, 9608> SCSI2 1/sequential removable
st0: density code 0x24, 512-byte blocks, write-enabled
ahsc0: target 5 now synchronous, period=208ns, offset=12.
sd1 at scsibus0 targ 5 lun 0: <, XP32150, L912> SCSI2 0/direct fixed
sd1: 2050MB, 3907 cyl, 10 head, 107 sec, 512 bytes/sect x 4199760 sectors
ahsc0: target 6 now synchronous, period=208ns, offset=12.
sd2 at scsibus0 targ 6 lun 0: <QUANTUM, XP34550S, LXY4> SCSI2 0/direct fixed
sd2: 4341MB, 5899 cyl, 10 head, 150 sec, 512 bytes/sect x 8890760 sectors
----- cut here -----

All other devices are scanned correctly.

'loadbsd -I ff netbsd' doesn't help either.
(sync off. sync is on per default)

- I don't know how I can test the writer with NetBSD.
- Has this error any consequence on the correct operation of the
  kernel and the entire system?
- How can I avoid it?

--
Cu  Georges Heinesch, Luxembourg
    geohei@ibm.net - geohei@geocities.com
    http://www.geocities.com/yosemite/2480
    PGP 2.6.3i / 5.1i public key on request and on public servers

... N49.34.09 E006.09.01