My DVD+R (RW) is not erasable/rewritable

Question

I just bought a Sony DVD+R but I don't know if it's either +R or +RW. I assume it is a DVD+RW since the mark "RW" is written at the bottom of the disc. Same for my built-in desktop burner, it has a "RW" mark and tiny "DVD+R DL" is written below the "RW" mark.

When I'm trying to erase the content of the DVD. I used several DVD erasers, including Active@ DVD Eraser. Although the software is different, the result is the same, this is the error message:

I'm not sure the DVD is really "ReWritable", because the DVD Burner I used to burn DVD said the disc status is "DVD+R". That's weird, because apparently my DVD discs are rewritable. (I'm wondering it is rewritable...)

Are the discs non-rewritable? If so, could you tell me what does the "RW" mark stand for? And also, the "AccuCORE" :) Though I'm actually wanting to know is it rewrite compatible.

Answer 1

There are 2 types of DVDs you can buy at the store, R and RW. It says DVD+R, so that just means it's only a 1 time writable DVD. You want one that says DVD+RW or DVD-RW (+ and - doesn't matter in this case). The RW logo doesn't actually mean it's a rewritable DVD, just like the DL doesn't mean it's a dual layer either.

I hope that helps, but when you purchase DVDs to use, on the package it should either say DVD-/+R or DVD-/+RW, and the RW will be more expensive.

Edit: Removed reference to finalizing the DVD, since I was wrong on how that works.