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afterdawn.com > forums > dvd±r discussion > dvd±r for newbies > what is dl??
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What is DL??
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kawi007
Junior Member
_ 		21. March 2006 @ 09:46 _ Link to this message    Send private message to this user   
I know it is dual layer, but does that mean it fits 9 gb on a disc?

Does it fit 4.7 on one side then 4.7 on the other side? If i bought the DL discs could i fit a dvd-9 onto a DL without compressing the files? thanks
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KCflyGuy
Member
_ 		21. March 2006 @ 10:05 _ Link to this message    Send private message to this user   
Hope this link helps.

http://www.anandtech.com/storage/showdoc.html?i=2010

DVD DL implies the definition; two layers of standard DVDR-5 are pressed together with a transparent spacer and a thin reflector between the two. The bottom layer (L0) is read and written to in exactly the same manner as DVDR-5. Reading and writing to the second layer (L1) is surprisingly simple; the laser simply focuses a fraction of a millimeter farther beyond the first recording layer - in focus with the L1. Since the laser is powerful enough, and L0 is transparent enough, L1 can be easily read.
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kawi007
Junior Member
_ 		21. March 2006 @ 13:11 _ Link to this message    Send private message to this user   
thanks
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