ONE Technologies
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R = Recordable
The use of a DVD-R drive is comparable to a CD recorder. It is
used to record own DVDs. Only difference is, that DVDs can
not be used in multi session mode, like CDs. DVD media can
only be recorded in whole (one session only). DVD-R media
can only be recorded once, they can not be deleted. That is
why the are called WORM media. WORM means Write Once
Read Many.
DVD-R is divided into two formats:
DVD-R (A) for Authoring DVD-R (G) for General Use
Capacity: 3.95 GB + 4.7 GB
Single sided, single Layer
Capacity: 4.7 GB
Single sided, single Layer
Can be read in all DVD
drives (a recorded DVD-R is
equivalent to a DVD-ROM)
Can be read in all DVD
drives (a recorded DVD-R is
equivalent to a DVD-ROM)
NO copy protection, Lead-
In area can be recorded.
Laser: 635nm
Copy protection, Lead-In
area can not be recorded .
Laser: 650nm
WORM WORM
DVD RW
RW = ReWritable
DVD RW media can be written and deleted. Therefore they
can be used many times. There are two different formats on
the market: DVD-RW and DVD+RW. They are not compatible
to each other!
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