Choosing the Right DVD Disk to Burn On
To write data to a DVD you’ll need to choose from one of two DVD discs – DVD RW and DVD R. DVD RW stands for DVD Rewritable. A DVD RW can be written to, erased, and rewritten to again and again. DVD R stands for DVD Recordable. A DVD R can be written to only once and cannot be erased or written over.
You may have noticed that there were no + or – signs in the above paragraph. That’s because there is difference between DVD-R, DVD-RW, and DVD+R, and DVD+RW. The DVD minus format was developed by the DVD Forum. The DVD plus format was developed by the DVD+RW Alliance. While there are differences, DVD minus and DVD plus both store 4.7GB of data.
There one more disc type to mention though - DVD DL, or DVD double (or dual) layer. DVD DL can store twice as much data as a normal DVD ROM, DVD R, or DVD RW disc. There are plus and minus versions of DVD DL, just like with DVD R and DVD RW. A DVD DL disc stores 8.5GB of data. DVD DL can apply to DVD R and DVD RW discs – that means that there can be DVD R DL and DVD RW DL discs.
So, when choosing a disc, make sure you have one that is compatible with your DVD drive!