what is the difference between cd-r and cd+r?

Answer 1

I think you mean DVD-R and DVD+R.

Both formats are explained here:
http://en.wikipedia.org/wiki/DVD%2BR
http://en.wikipedia.org/wiki/DVD-R

but essentially they are both standards for a write-once DVD of about 4.7 Gb of data, developed by competing groups.
As of now, most DVD writers are DVD+-R meaning you can put in either +R or -R, doesn't matter anymore. It used to be a pain in the *** though.

Now watch them do it again with bluray and HD-DVD!

Answer 2

There's nothing called CD+R,

CD-R : Is a read only CD that is writable for the first time only and after that you wont be able to write data on it

CD-RW : Is the rewritable Cd, which you are able to erase and write data serveral times on it

Good Luck

Answer 3

CD-R are one time user CDs. You write to them once and the results are permanent. Can not erase and reuse.
CD-RW are re-writeable. Can be erased and reused. Or formated and used like a gigantic floppy disk.
CD+R does not exist - no such thing.

(There are DVD-R and DVD+R, but not CD+R)

Answer 4

No such thing as a CD+R, I assume you mean DVD-R and DVD+R?

Traditionally DVD- was the format used for data and DVD+ was the format used for movies. Now, there's no real difference.

Answer 5

As far as CD's go, nothing. it only matters for DVD's it's 2 different formats like someone who speaks english trying to talk to someone who speaks chinese. Also like trying to put a VHS tape in a BetaMax machine.

Answer 6

one has a minus and one has a plus. Hope this cleared it up for you

Answer 7

the +/- bit tells you what type of drive it can go in.

a + will go in a + drive

a - will go in a - drive

both will go in a +/- drive