cdrwtool - Man Page

perform various actions on a CD-R, CD-RW, and DVD-R


cdrwtool -d device -i | -g

cdrwtool -d device -s [ write-parameters ]

cdrwtool -d device -q [ write-parameters ]

cdrwtool -d device -m offset [ write-parameters ]

cdwrtool -d device -u blocks [ write-parameters ]

cdrwtool -d device -b b_mode [ write-parameters ]

cdrwtool -d device -c blocks [ write-parameters ]

cdwrtool -d device -f filename [ write-parameters ]

cdwrtool -d device -r track [ write-parameters ]

cdrwtool -h


The cdwrtool command can perform certain actions on a CD-R, CD-RW, or DVD-R device. Mainly these are blanking the media, formatting it for use with the packet-cd device,  and applying an UDF filesystem.

The most common usage is probably the `quick setup' option:

cdrwtool -d device -q

which will blank the disc, format it as one large track, and write the UDF filesystem structures.

Other options get and set various parameters of how the device is set up, and provide for different offsets, modes and settings from the defaults.

The usefulness of most of the options is not explained.


Main directives:

-d device

Specify the device to use. eg. /dev/sr0


Print disc track info.


Print write parameters.

-u length

Make a UDF filesystem using length number of blocks.


`Quick setup': blank the disc, format it as one large track and write a UDF filesystem.

-m offset

Format the disc at offset number of blocks.

-b mode

Blank the disk using a mode of `full' or `fast'.

-f filename

Write file.

-c track

Close track.

-r track

Reserve track.

-z length

Fixed packet length.


Set write parameters determined by -l, -w, and -p options for the disc.

-v version

Specify the udf revision to use. Valid revisions are 0x0201, 0x0200 and 0x0150. If omitted, mkudffs udf-version is 0x0150.


Prints a sparse help message.

Write parameters:

-t speed

Set write speed. (Defaults to 12x ?)

-l type

Set multi-session field. Either `0' (default), `1', or `3', corresponding to `No B0 pointer. Next Session not allowed', `B0 pointer = FF:FF:FF. Next session not allowed', and `Next session allowed. B0 pointer = next possible program area' respectively.

-w mode

Set write mode. Either `mode1' or `mode2' (default).

-p type

Set packet type. Either `0' or `1' (default), corresponding to variable and fixed packet sizes respectively.

-o offset

Set write offset.


Jens Axboe <>
Ben Fennema
Some additions by Richard Atterer <>


cdrwtool is part of the udftools package and is available from

See Also


Referenced By

dvd+rw-format(1), mkudffs(8), pktsetup(8), udfinfo(1), udflabel(8), wrudf(1).

udftools Commands