[X4U] How big is a DVD really?

[Michael Winter]

On Nov 22, 2006, at 8:53 AM, Stroller wrote:

> What size should I make the zip segments?

 From <http://forums.dvdoctor.net/showthread.php?t=1076>

Q: The disc says the capacity is 4.7 GBytes, but my authoring  
software says it's 4.38 GBytes - how come ?

A: Disc manufacturers assume: 1 GByte = 1000 x 1000 x 1000 bytes, but  
computer software normally assumes: 1 GByte = 1024 x 1024 x 1024  
bytes. So 4.7 (disc manufacturers) GBytes = 4.38 (computer software)  
GBytes

That whole 1000 vs. 1024 for "k" has caused problems since day 1.

-Mike