how to mount a UDF drive and write to it.

I got udf writing enabled using kernel 2.4.21 although I can not seem to be able to format the optical magneto disks with UDF. The HP 220mx has 2 optical magneto drives and I am trying to use mtx to control the robotics which seems to work although I can not format the disks and them mount them.

Also how can I move forward to be able to mount these disks and format them.
I tried adding sdb1 to /etc/fstab although now in dmsesg I get the following messages.
I/O error: dev 08:11, sector 64
I/O error: dev 08:11, sector 7491588
I/O error: dev 08:11, sector 7490564
I/O error: dev 08:11, sector 7490340
I/O error: dev 08:11, sector 7491580
I/O error: dev 08:11, sector 7490556
I/O error: dev 08:11, sector 7490332
I/O error: dev 08:11, sector 7490988
I/O error: dev 08:11, sector 7489964
I/O error: dev 08:11, sector 7489740
I/O error: dev 08:11, sector 7490980
I/O error: dev 08:11, sector 7489956
I/O error: dev 08:11, sector 7489732
I/O error: dev 08:11, sector 6146944
I/O error: dev 08:11, sector 6145920
I/O error: dev 08:11, sector 6145696
I/O error: dev 08:11, sector 6146936
I/O error: dev 08:11, sector 6145912
I/O error: dev 08:11, sector 6145688
I/O error: dev 08:11, sector 6146344
I/O error: dev 08:11, sector 6145320
I/O error: dev 08:11, sector 6145096
I/O error: dev 08:11, sector 6146336
I/O error: dev 08:11, sector 6145312
I/O error: dev 08:11, sector 6145088
I/O error: dev 08:11, sector 1248
I/O error: dev 08:11, sector 1024

Below is the output from cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>                       <dump> <pass>
/dev/sda1       /               ext3    defaults,errors=remount-ro      0      1
/dev/sda2       none            swap    sw                      0       0
proc            /proc           proc    defaults                        0      0
/dev/fd0        /floppy         auto    defaults,user,noauto            0      0
/dev/sdb1       /magneto        udf
/dev/cdrom      /cdrom          iso9660 defaults,ro,user,noauto         0      0

Below is the output from cat /proc/partitions
computer name:/dev# cat /proc/partitions
> major minor #blocks name
>

>    8     0   35544576 sda
>    8     1   34178256 sda1
>    8     2    1365525 sda2
>    8    16    4383356 sdb
>    8    17  850995205 sdb1
>    8    18  271987362 sdb2
>    8    20      25817 sdb4
>    8    32    4383356 sdc
>    8    33  850995205 sdc1
>    8    34  271987362 sdc2
>    8    36      25817 sdc4

Jim