how can i increase the size of a DVD-R ?

Answer 1

You can increase the size of the DVDs by two ways: compressing the data you want to fill the DVD with, and overburn your DVDs.
According to file, there must be many ways of compressing data. If it is a document, you must use Adobe Acrobat pdf creator. If it is music, compress it to a type and bitrate, so you can have the greatest quality in less data rate. If it is an image, you can trnsform to a type that you can have the best quality with less Bytes. If it is a movie, you must have a video compressing/transforming tool, so you can change to another type, without loosing quality. If it is a DVD, you can compress it with a little loss of quality, but it's a spent-time option.
The overburning is a function, in which you can have a few more MegaBytes, so you can write the data even if they are more than 4.38 GB, that a blank DVD can be filled. This ability is in any burning software, it is automatic most of the times, but you must know there is a risk at this option! Only 15% of the over-burned DVDs burned succesfully, according to my burn experience.

Answer 2

Unfortunately the size of a DVD is static, and unchangeable. However, if your trying to fit more data onto a DVD, you may want to try zipping file.

If you still need more information, you can buy dual layered DVD discs. They can hold twice the size of regular DVD's.

Hope this helps!
Jason

Answer 3

Like just said you cant, your limited to size of disk