IDE燒錄機使用 k3b 安裝問題 - BBS

大家好，我是freebsd新手，初次發問，請多指教。

我有一台 IDE 介面的 DVDRW，系統上(freebsd 6.3, amd64)裝了 k3b 後，
照著下面的說明重編了核心。
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/
creating-cds.html#ATAPICAM

重開機以後的確可以看到增加了 /dev/cd0 的節點，
但是在 k3b 啟動時總是出現錯誤警告找不到裝置。
: No CD/DVD writer found.
: K3b did not find an optical writing device in your system. Thus, you will not
: be able to burn CDs or DVDs. However, you can still use other K3b features
: like audio track extraction or audio transcoding or ISO9660 image creation.

放入一般資料光碟是可以正常 mount 與讀取資料的。
　　(使用 mount -t cd9660 /dev/cd0 /mnt )

請問還欠缺了哪方面的設定呢？
　　有請板上各位前輩指教，謝謝！


#cat /etc/fstab
# Device Mountpoint FStype Options Dump Pass#
/dev/cd0 /cdrom cd9660 ro,noauto 0 0


#ls -l /dev/cd0
crw-r----- 1 root operator 0, 90 8 15 17:26 /dev/cd0

#camcontrol devlist
<ASUS DRW-2014S1 1.01> at scbus0 target 0 lun 0 (cd0,pass0)

#dmesg
..........
acd0: DMA limited to UDMA33, device found non-ATA66 cable
ACPI-0438: *** Error: Looking up [\\_PR_.CPU0] in namespace, AE_NOT_FOUND
SearchNode 0xffffff0000a08200 StartNode 0xffffff0000a08200 ReturnNode 0
acd0: DVDR <ASUS DRW-2014S1/1.01> at ata0-master UDMA33
acd0: FAILURE - INQUIRY ILLEGAL REQUEST asc=0x24 ascq=0x00
cd0 at ata0 bus 0 target 0 lun 0
cd0: <ASUS DRW-2014S1 1.01> Removable CD-ROM SCSI-0 device
cd0: 33.000MB/s transfers
cd0: cd present [1 x 2048 byte records]
acd0: FAILURE - READ_TOC ILLEGAL REQUEST asc=0x24 ascq=0x00
acd0: FAILURE - READ_TOC ILLEGAL REQUEST asc=0x24 ascq=0x00
acd0: FAILURE - READ_TOC ILLEGAL REQUEST asc=0x24 ascq=0x00
Trying to mount root from ufs:/dev/ad7s1a
acd0: FAILURE - READ_TOC ILLEGAL REQUEST asc=0x24 ascq=0x00
acd0: FAILURE - READ_TOC ILLEGAL REQUEST asc=0x24 ascq=0x00
(cd0:ata0:0:0:0): READ TOC/PMA/ATIP {MMC Proposed}. CDB: 43 0 0 0 0 0 0 0 4 0
(cd0:ata0:0:0:0): CAM Status: SCSI Status Error
(cd0:ata0:0:0:0): SCSI Status: Check Condition
(cd0:ata0:0:0:0): ILLEGAL REQUEST asc:24,0
(cd0:ata0:0:0:0): Invalid field in CDB
(cd0:ata0:0:0:0): Unretryable error
kldload: Unsupported file type
acd0: FAILURE - READ_TOC ILLEGAL REQUEST asc=0x24 ascq=0x00
g_vfs_done():cd0[READ(offset=32768, length=2048)]error = 5
acd0: FAILURE - READ_TOC ILLEGAL REQUEST asc=0x24 ascq=0x00
acd0: FAILURE - READ_TOC ILLEGAL REQUEST asc=0x24 ascq=0x00
........

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