What is the actual size of a dvd??

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thilina

From Sri Lanka
I use nero to burn DVD's.I have noticed that even the size on the dvd is mentioned as 4.7GB,I can actually write only abt 4.2GB's.Why is this happening??
 
S

SE><IE

Guest
perhaps the formatted and unformatted capacities. cuz 4.3 is the standard for DVD-R (single layer)
 

sourav

In the zone
in manufacturing standards of hardisk 1 GB = 1000 MB.
So, when multiplied 4.3 GB * 1024 * 1024 * 1024 = 4617089843.2 bytes or 4.7*10^9 bytes (approx).

OK now divide (4.7 *10^9)/1024*1024*1024 = 4.3..

So you get 4.3 GB on the DVD or 4.7 GB of data as said my manufactures.

NB:- This may not be fully correct, i am sorry if i'm wrong. But I felt this correct as it works in HDD.
 

kalpik

In Pursuit of "Happyness"
sourav said:
in manufacturing standards of hardisk 1 GB = 1000 MB.
So, when multiplied 4.3 GB * 1024 * 1024 * 1024 = 4617089843.2 bytes or 4.7*10^9 bytes (approx).

OK now divide (4.7 *10^9)/1024*1024*1024 = 4.3..

So you get 4.3 GB on the DVD or 4.7 GB of data as said my manufactures.

NB:- This may not be fully correct, i am sorry if i'm wrong. But I felt this correct as it works in HDD.
Absolutely correct! :cool:
 

readermaniax

Ambassador of Buzz
sourav said:
in manufacturing standards of hardisk 1 GB = 1000 MB.
So, when multiplied 4.3 GB * 1024 * 1024 * 1024 = 4617089843.2 bytes or 4.7*10^9 bytes (approx).

OK now divide (4.7 *10^9)/1024*1024*1024 = 4.3..

So you get 4.3 GB on the DVD or 4.7 GB of data as said my manufactures.

NB:- This may not be fully correct, i am sorry if i'm wrong. But I felt this correct as it works in HDD.

WOW!.. Gr8 Maths!
 

PrinceHeart

In the zone
Actual Capacity of a single layered DVD blank media:

Blank Disc Capacity : [2,298,496 Sectors = 4.71 GB (4.38 GiB)]

cheerz
 

royal

Padawan
guys, I asked this elsewhere but got no answer...

has anyone actually overburned a DVD-R 4.7 GB ???:confused:

If so, please state the steps ...:p

Kalpik, perhaps you have done it ? :(
 
I have observed that if you overburn a dvd, especially with nero, there will be no problem in the writing but during lead out will not be written properly. I'e lost two dvds trying to overburn
 
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