MMCFORMAT(8) BSD System Manager's Manual MMCFORMAT(8)NAME
mmcformat -- format optical media
SYNOPSIS
mmcformat [-BDFGHhIMOpRrSsw] [-b blockingnr] [-c cert-num] special
DESCRIPTION
The mmcformat utility formats optical media conforming to the MMC standard. This includes CD, DVD, and Blu-Ray (BD) media.
The options are as follows:
-B Blank media when possible before formatting it.
-b blockingnr Explicitly select packet size in sectors (for CD-RW only). It is not recommended to change this from its default of 32.
-c cert-num Certify media for DVD-RAM / DV-RE. The argument cert-num specifies:
0 no certification
1 full certification
2 quick certification
-D Debug mode. Print all SCSI/ATAPI command errors.
-F Format media.
-G Grow last CD-RW/DVD-RW session.
-H Show help and print formatting choices for the inserted media.
-h Show help and print formatting choices for the inserted media.
-I Show help and print formatting choices for the inserted media.
-M Select MRW (Mount Rainier) error correcting background format.
-O Old style CD-RW formatting; recommended for CD-RW.
-p Explicitly set packet format.
-R Restart previously stopped MCD-MRW or DVD+RW background format.
-r Recompile defect list for DVD-RAM.
-S Grow spare space DVD-RAM / BD-RE.
-s Format DVD+MRW / BD-RE with extra spare space.
-w Wait until completion of background format.
NOTES
Due to the enormous varieties in optical media, mmcformat is made as generic as possible. This can result in confusion.
EXAMPLES
mmcformat -B -O /dev/rcd0d
Blanks and then formats a CD-RW disc using the ``old style'' format command. It is recommended to use this ``old style'' command unless your
drive reports that it's not supported; in that case, resort to the default -F. Note that a CD-RW disc can be reformatted without being
blanked. Blanking switches between sequential and fixed packet writing by erasing the disc. This can also help to revive old discs.
mmcformat -F -M /dev/rcd0d
Format a CD-RW or a DVD+RW to use MRW (Mount Rainier). This format tries to hide media flaws as much as possible by relocation.
SEE ALSO scsictl(8)HISTORY
The mmcformat command first appeared in NetBSD 5.0.
AUTHORS
Reinoud Zandijk <reinoud@NetBSD.org>
BUGS
mmcformat could be merged with scsictl(8) but that tool is very hard disk oriented.
BSD May 9, 2008 BSD
Check Out this Related Man Page
MOUNT_UDF(8) BSD System Manager's Manual MOUNT_UDF(8)NAME
mount_udf -- mount an UDF file system
SYNOPSIS
mount_udf [-c] [-g gid] [-o options] [-t gmtoff] [-s session] [-u uid] special node
DESCRIPTION
The mount_udf command attaches the UDF file system residing on the specified special device node on the location indicated with node.
Anonymous files stored on the UDF disc will be represented and saved in the specified uid:gid pair. If unspecified, it will default to
nobody:nobody. Both uid and gid can be either specified with their names as with their numerical equivalents.
-c Close the session after unmount creating remountable snapshots. Closing a session also allows -ROM devices to read the disc cre-
ated. Note that this option only makes sense when mounting sequential recordable media like CD-R and DVD*R.
-g gid Set the group of anonymous files on the file system. The default group is the nobody group.
-o options Use the specified mount options as specified in mount(8).
-s session Select the session session to be mounted instead of the default last one. Implements readonly snapshots on sequential media.
Positive session values indicate an absolute session number. Negative session values are relative to the last session found on
the disc. Note that this option only makes sense when mounting sequential recordable media like CD-R and DVD*R.
-t gmtoff Set the time zone offset (in seconds) from UTC to gmtoff, with positive values indicating east of the Prime Meridian. If not
set, the user's current time zone will be used.
-u uid Set the owner of anonymous files on the file system. The default owner is the user nobody.
SEE ALSO mount(2), vnd(4), fstab(5), mount(8), umount(8), vnconfig(8)NOTES
UDF is a file system defined by the OSTA standardization group and is tailored for data interchange on optical discs (like CDs and DVDs)
between different operating systems. Its also more and more common on other media like Compact Flash (CF) cards.
Read and write access is supported for all media types that CD/DVD type drives can recognise including DVD-RAM. BluRay support is prelimi-
nary; read-only access should work fine but write support is experimental.
Implemented and tested media types are CD-ROM, CD-R, CD-RW, CD-MRW, DVD-ROM, DVD*R, DVD*RW, DVD+MRW, DVD-RAM but the same code can also read
HD-DVD and BluRay discs. Discs created and written by UDFclient, Nero's InCD, and Roxio's DirectCD/Drag2Disc can be read without problems.
Both open and closed media are supported so there is no need to close discs or sessions.
All current UDF versions up to version 2.60 are supported.
Hard disk partitions and vnd(4) devices may also be mounted. Note when mounting a vnd(4) device it might be necessary to specify the file
image sector size in the geomspec when creating the vnd(4) device or the disc sector size will be used.
BUGS
Write support for UDF version 2.50 is not completely mature and UDF version 2.01 should be used if possible; this is also the default format.
Due to lack of test media and recording devices, BluRay support and in particular BluRay-R is still preliminary as of writing.
BSD July 13, 2009 BSD