| MMCFORMAT(8) | System Manager's Manual | MMCFORMAT(8) | 
mmcformat —
| mmcformat | [ -BDFGHhIMOpRrSsw] [-bblockingnr] [-ccert-num] special | 
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-b
    blockingnr-c
    cert-num-D-F-G-H-h-I-M-O-p-R-r-S-s-wmmcformat is made as generic as possible. This can
  result in confusion.
mmcformat -B -O
  /dev/rcd0dBlanks 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/rcd0dFormat 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.
mmcformat command first appeared in
  NetBSD 5.0.
mmcformat could be merged with
  scsictl(8) but that tool is
  very hard disk oriented.
| May 9, 2008 | NetBSD 9.4 |