How much data i can write in a dvd

[skp_thillenkery]

What is the data size possible to write on a dvd ?..i found one cd which is for windows installation says " windows all in one CD" and have many windows versions inside..xp proffessional,xp classic,vista etc...how is it possible to write all this in one cd..it's size showing 6.75GB !!! what is the maximum size possible to write on a CD or DVD ..thanks in advance..

 

[Rick]

http://en.wikipedia.org/wiki/DVD

Locked because the mention of an 'Windows all in one CD" is going to cause some... inflammatory replies. ;-)