Plextor cd-rw problem!

[Ângelo Rodrigues]

Hi,

I'm trying to install a Plextor PX-4824TU CD Writer (usb external) in a 
freebsd 4.8 system. During the system boot up, the CD-Writer is recognized
without any problem as it is shown below:

cd0 at umass-sim0 bus 0 target 0 lun 0
cd0: <PLEXTOR CD-R   PX-W4824A 1.03> Removable CD-ROM SCSI-0 device 
cd0: 650KB/s transfers
cd0: Attempt to query device size failed: NOT READY, Medium not present - tray 
closed

But when I start writing a cd, cdrecord fails and the following message 
appears in /var/log/messages:

umass0: Unsupported ATAPI command 0x35

# cdrecord -v dev=0,0,0 image.iso
Cdrecord 2.0 (i386-unknown-freebsd4.8) Copyright (C) 1995-2002 Jörg Schilling
TOC Type: 1 = CD-ROM
scsidev: '0,0,0'
scsibus: 0 target: 0 lun: 0
Using libscg version 'schily-0.7'
atapi: 0
Device type    : Removable CD-ROM
Version        : 0
Response Format: 1
Vendor_info    : 'PLEXTOR '
Identifikation : 'CD-R   PX-W4824A'
Revision       : '1.03'
Device seems to be: Generic mmc CD-RW.
Using generic SCSI-3/mmc CD-R driver (mmc_cdr).
Driver flags   : MMC-3 SWABAUDIO BURNFREE
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
FIFO size      : 4194304 = 4096 KB
Track 01: data    23 MB
Total size:       26 MB (02:39.81) = 11986 sectors
Lout start:       27 MB (02:41/61) = 11986 sectors
Current Secsize: 2048
cdrecord: Input/output error. read disk info: scsi sendcmd: retryable error
CDB:  51 00 00 00 00 00 00 00 04 00
status: 0x0 (GOOD STATUS)
cmd finished after 0.043s timeout 240s
cdrecord: Cannot get disk type.
 
# cdrecord -scanbus
Cdrecord 2.0 (i386-unknown-freebsd4.8) Copyright (C) 1995-2002 Jörg Schilling
Using libscg version 'schily-0.7'
scsibus0:
        0,0,0     0) 'PLEXTOR ' 'CD-R   PX-W4824A' '1.03' Removable CD-ROM
        0,1,0     1) *
        0,2,0     2) *
        0,3,0     3) *
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *
scsibus3:
        3,0,0   300) 'RAID 5  ' 'online          ' '    ' Disk
        3,1,0   301) *
        3,2,0   302) *
        3,3,0   303) *
        3,4,0   304) *
        3,5,0   305) *
        3,6,0   306) *
        3,7,0   307) *

Does anyone have any ideia about this problem? 
I would appreciate some help.

Regards,

Angelo Rodrigues - amr at fccn.pt 
FCCN - Fundacao para a Computacao Cientifica Nacional
Av. Brasil, 101  1700-066 Lisboa - Portugal
Tel: +351 218440100   Fax: +351 218472167
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