Desktop

Ask something
Discussion Locked

dvd and cd

0 helpful
2 replies

by prollexxx2003

Closed to new repliesThis discussion is closed. It stays readable, but it takes no new replies.
what are two physical differences between a dvd and cd?

2 replies

by joseph moore

Well, CDs can hold aroun 700 MB of data, while a DVD can hold over 6 GB of data.
And that is due to, I believe, the number of passes that can be made. DVDs have "multilayer" writing, I believe it is called. That is why the more data.

by norbert_beaver

SOme commercial DVDs are dual-layer, thus they are almost two Cds stacked on top of each other, but bigger. Normal DVD-writers cannot write these but some newer ones can. Normal CDs do not have this dual-layer format, thats why you need a DVD drive to read DVD. DVD drives can read both DVDs and CDs but normal CD drives can't read DVDs

This discussion is closed to new replies.