cdrwtool does not work

[raoul]

I need to prepare a cdrw disc for packet-writing. I issue the proper command, but get the following errors:

# cdrwtool -d /dev/hdc -q
using device /dev/hdc
1222KB internal buffer
setting write speed to 12x
wait_cmd: Input/output error
Command failed: 55 10 00 00 00 00 00 00 3c 00 00 00 - sense 00.26.00
00 00 00 00 00 00 00 00 05 32 20 27 0a 00 00 00 20 00 00 00 00 20 00 96 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 00
mode_select: Illegal seek
set_write

I tried to blank it with cdrecord:
# cdrecord dev=/dev/hdc blank=fast
This blanks the cdrw disc without problems.

Formatting the disc with cdrwtool results in this ( I set it to format only 20480 blocks just to see if it works):
# cdrwtool -d /dev/hdc -m 20480
using device /dev/hdc
formatting 20480 blocks
1238KB internal buffer
setting write speed to 12x
wait_cmd: Input/output error
Command failed: 55 10 00 00 00 00 00 00 3c 00 00 00 - sense 00.26.00
00 00 00 00 00 00 00 00 05 32 20 27 0a 00 00 00 20 00 00 00 00 20 00 96 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 00
mode_select: Illegal seek
set_write


I already have tried to tweak the commands by setting some of the other cdrwtool options (see: man cdrwtool), but no go...

Does cdrwtool work for you? Do I miss something here? I have already read many messages on the SUSE packet-writing mailng list and also found a howto in Gentoo's wiki here (http://gentoo-wiki.com/HOWTO_Packet_Writing_on_CD-RW), but these have not been helpful for my problem with cdrwtool's errors.

Any info will be greatly appreciated.

[raoul]

Nobody has ever tried to format a cdrw? Does cdrwtool work for you?

I can use preformatted CDRW discs without problems so far with the pktcdvd module. The problem is that I cannot use cdrwtool to prepare them (blanking, formating, udf structure creation) under linux. I tried with new and previously used cdrw discs.