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MMCFORMAT(8)                System Manager's Manual               MMCFORMAT(8)

     mmcformat - format optical media

     mmcformat [-BDFGHhIMOpRrSsw] [-b blockingnr] [-c cert-num] special

     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

     -h               Show help and print formatting choices for the inserted

     -I               Show help and print formatting choices for the inserted

     -M               Select MRW (Mount Rainier) error correcting background

     -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

     -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.

     Due to the enormous varieties in optical media, mmcformat is made as
     generic as possible.  This can result in confusion.

           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.


     The mmcformat command first appeared in NetBSD 5.0.

     Reinoud Zandijk <reinoud@NetBSD.org>

     mmcformat could be merged with scsictl(8) but that tool is very hard disk

NetBSD 8.99.34                    May 9, 2008                   NetBSD 8.99.34