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mmc_format

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

NAME

mmc_formatformat optical media

SYNOPSIS

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

DESCRIPTION

The mmc_format 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, mmc_format is made as generic as possible. This can result in confusion.

EXAMPLES

mmc_format -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.
mmc_format -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 mmc_format command first appeared in NetBSD 5.0.

AUTHORS

Reinoud Zandijk <reinoud@NetBSD.org>

BUGS

mmc_format could be merged with scsictl(8) but that tool is very hard disk oriented.
May 9, 2008 Debian Sid