On Sat, Sep 09 2000, Ben Fennema wrote:
btw: is the 450mb of 650mb the penlaty I pay for using UDF over ISO9600 and for using RW instead of RO?
No, this appears to be a bug in cdrwtool when setting up the space. It does this on one of my drives too, I've noticed. You should be able to get around 550MB space on the disc.
First, on the drive that gives 450mb could you stick in a blank cdrw and run cdrwtool -i on it and send me the output?
bart:/tmp/udf/udf/tools # ./cdrwtool -d /dev/scd0 -i using device /dev/scd0 2317KB internal buffer setting write speed to 4x DISC INFO: erasable : Yes border = 0 Disc status = 0 number of first track = 1 number of sessions = 1 number of tracks = 1 status of last track = 1 uru = 0 did_v = 0 dbc_v = 0 disc type = 255 disc_id = 0 OPC entries = 0 TRACK INFO: Track 1 track_number = 1 session_number = 1 damage = 0 copy = 0 track_mode = 0 Rt = 0 blank = 1 packet = 0 fp = 0 data_mode = 15 lra_v = 0 nwa_v = 1 track_start = 0 next_writable = 0 last_recorded = 0 free_blocks = 336154 packet_size = 0 track_size = 336154 (672308KB) See, this looks ok. But doing cdrwtool -q only gives the reported 450MB. I noticed this some time ago, but it was low prio to me so I put off fixing cdrwtool.
Second, the (normal) ~550MB is due to packet writing overhead. So for every packet written there is 7 blocks lost do to lead-in/lead-out/link blocks.
Yup
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* Jens Axboe