Disc Not Empty

[DaneTheMain]

Everytime i try to burn the an image to a blank disc i have it says "Disc Not Empty". Everytime i try to delete the data it never ever works. I even tried to verify it and it worked almost perfectly so i don know what going. somebody plz help me im new to this dvd world 

[dbminter]

Since you're new to the DVD world as you say, you may not know there are 2 kinds of writable DVD's.  One is write once and one is write many.  If you write to a write once media like DVD-R or DVD+R, you can't write to it again or erase anything from it.  DVD-RW and DVD+RW can be rewritten to many times.  DVD-RAM is also write many, but it's a relatively niche area.