Maximum Size Of Dvd Data Files

[roderick]

I selected 25 files to burn to a 4.7 GB DVD+R using Sonic Record Now v 7.2. I dragged the files over and the programs tells me I have used 4.55 GB of space. However when I go to burn the files it says I am 75 MB over the limit.

I do not understand when I have fewer than 4.7 GB of files.

 

What is the true limit of a 4.7 GB DVD+R and for that matter a DVD+RW?

[Brendon]

They both are very close in size. A single layer DVD+ disc has 2295104 sectors or 2048 bytes, which equals 4,700,372,992 bytes.

 

Some people call those 4.7 billion bytes "4.7 GB". If you call 1024 x 1024 bytes a megabyte, then a DVD holds around 4483 MB. If 1024 x 1024 x 1024 bytes is a GB, then the disc holds 4.377 GB.

 

That's where the confusion arises. Is a GB equal to 1,073,741,824 bytes, or 1,000,000,000 ?

 

Best regards,

Brendon