newfs_udf(8) - NetBSD Manual Pages

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NEWFS_UDF(8)            NetBSD System Manager's Manual            NEWFS_UDF(8)

newfs_udf -- construct a new UDF file system
newfs_udf [-cFM] [-B blockingsize] [-L loglabel] [-P discid] [-p percentage] [-S sectorsize] [-s size] [-t gmtoff] [-V max_udf] [-v min_udf] special
The newfs_udf utility creates an UDF file system on device special suit- able for the media currently inserted. The options are as follow: -B blockingsize When creating image files, specify the blocking size or packet- size of the media to blockingsize. -c Perform a crude surface check first to weed out disc faults on rewritable media. -F Force file system construction on non-empty recordable media or create an image file. -L loglabel Set the disc logical label to the specified loglabel. -M Disable metadata partition creation when selected UDF version or media dictates this. For strict conformance and interchange, don't disable this unless its causing problems. -P discid Set the physical disc label to the specified discid. Prepend discid with volsetname separated with a ':' if wanted. For strict conformance and interchange, don't set this manually unless it has a unique hex number in the first 8 character posi- tions. -p percentage Percentage of partition to be initially reserved for metadata on the Metadata partition. It defaults to 20 %. -S sectorsize Set the sectorsize for image files. For strict conformance and interchange, don't set this manually. -s size For image files, set the file size to the humanized size size. -t gmtoff Use the specified gmtoff as gmt time offset for recording times on the disc. -V max_udf Select max_udf as the maximum UDF version to be supported. For UDF version 2.50, use ``0x250'' or ``2.50''. -v min_udf Select min_udf as the minimum UDF version to be supported. For UDF version 2.01, use ``0x201'' or ``2.01''.
The UDF file system is defined for the entire optical medium. It can only function on the entire CD/DVD/BD so the raw partition has to be specified for read/write actions. For newfs_udf this means specifying the raw device with the raw partition, i.e. /dev/rcd0d or /dev/rcd0c. Some rewritable optical media needs to be formatted first before it can be used by UDF. This can be done using mmcformat(8). The default UDF version is version 2.01.
Create a file system, using the specified names on the device /dev/rcd0d with the default UDF version : newfs_udf -P "Encyclopedia:copy-nr-1" -L "volume 2" /dev/rcd0d Create a 4.8 GiB sparse file and configure it using vnconfig(8) to be a 2048 sector size disc and create a new UDF file system on /dev/rvnd0d : dd if=/dev/zero of=bigdisk.2048.udf seek=9999999 count=1 vnconfig -c vnd0 bigdisk.2048.udf 2048/1/1/1 newfs_udf -L bigdisk /dev/rvnd0d Create a 2 GiB file and create a new UDF file system on it using the default 512 byte sector size : newfs_udf -L bigdisk2 -F -s 2G bigdisk2.iso Create a 200 MiB file and create a new UDF file system on it using a sec- tor size of 2048 : newfs_udf -L bigdisk2 -F -s 200M -S 2048 bigdisk3.iso Create a new UDF file system on the inserted USB stick using its native sectorsize of 512 : newfs_udf -L "My USB stick" /dev/rsd0d
disktab(5), disklabel(8), mmcformat(8), newfs(8)
The newfs_udf command first appeared in NetBSD 5.0.
Reinoud Zandijk <>
The P and the S arguments have changed meaning. The meaning of S has been merged into P since NetBSD 6.1. NetBSD 9.3 August 2, 2013 NetBSD 9.3
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