The DVD-R format was developed by Pioneer in 1997 vc DVD+R in 2002 by Sony.
DVD+R format was not an official DVD format until January 25, 2008.
DVD-R(W) and DVD+R(W) format are incompatible.
DVD-R(W) use amplitude modulation, DVD+R(W) use phase modulation, so more reliable.
On multi-session DVD-R(W) disk any session take up to 96 MB in time on DVD+R(W) every session take exactly 2 MB.
|DVD-R (SL) DVD+R (SL) DVD-R DL DVD+R DL||2,298,496 2,295,104 4,171,712 4,173,824||4,707,319,808 4,700,372,992 8,543,666,176 8,547,991,552||4.7 4.7 8.5 8.5||4.384 4.378 7.957 7.961|
Archival Grade CD & DVD - for store critical data.
Approximately 100 years under proper storage conditions (from TDK support).
A CD-RW disc can be erased and rewritten up to a 1,000 times. Reliability and performance will not decrease, even as the number of rewrites increase.
$ dd if=/dev/dvd of=dvd.iso # for dvd $ dd if=/dev/cdrom of=cd.iso # for cdrom $ dd if=/dev/scd0 of=cd.iso # if cdrom is scsi $ mkisofs -o /tmp/cd.iso /tmp/directory/ # from file hierarchy
In 2006 build system of cdrtools changed and have CDDL, which incomputable with GPL.
Fully GPL alternative for cdrtools. Includes:
Installing under Debian:
$ sudo apt-get install wodim genisoimage
Cygwin (cdrecord is symlink to wodim, mkisofs is symlink to genisoimage, cdrkit contain only READMY):
$ setup.exe -p cdrkit,wodim,genisoimage
Make iso image:
$ genisoimage -A "<info>" -gui -J -R -o <img-file> <dir1> <dir2> ...
<info> is up to 128 bytes. -J adds Joliet directory records wich useful on Windows. -R adds the Rock Ridge protocol.
To test your image mount it (on Linux):
$ sudo mount -t iso9660 -o loop,ro <img-file> <mnt-point>
$ sudo apt-get install cdrskin
xorriso copies file objects from POSIX compliant filesystems into Rock Ridge enhanced ISO 9660 filesystems and allows session-wise manipulation of such filesystems. It can load the management information of existing ISO images and it writes the session results to optical media or to filesystem objects.
Vice versa xorriso is able to restore file objects from ISO 9660 filesystems.
ImgBurn is a lightweight CD / DVD / HD DVD / Blu-ray burning application that everyone should have in their toolkit!
For Windows 95/98/2000/XP/Vista/2008/7, work in Wine under Linux.
$ sudo apt-get install mdf2iso $ mdf2iso $IN.mdf
$ sudo apt-get install nrg2iso $ nrg2iso $IN.nrg $OUT.iso