Erase a dvd+R using software

Ok so we all know its possible to write a dvd+r up to the limit. (one time only of course) So if it can write data once, that why cant we have it ignore the data or headers and just write all 1's or just random garbage to the disk to destory it? It actually sounds cooler than breaking it...

If there is software than please provide a link (if its free/open source)

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>Ok so we all know its possible to write a dvd+r up to the limit. (one time only of course)

There's your answer. No, you can't "erase" data on single-write discs.

To understand why, you need to understand what erasing files actually means. When you "erase" or "delete" files on your computer, what is actually happening is that the file's listing is being removed from the directory tree, and the occupied space reported as free for writing, but the data itself is still actually there (these actions in turn involve writing data to the disk). The "erased" data will become truly gone once it is overwritten by more data. (This is why it is possible to recover deleted files sometimes, and why, if you delete a critical file from a disk - not disc, which refers to a dvd/cd, but a hard disk - you should immediately shut down the system, and then image the affected disk and attempt recovery from that image on another system).

So to erase files from non-rewriteable media, you would have to...write to it! Which is tautologically impossible.
(Addendum: multiple sessions aren't to be confused with overwriting - it's true that you can "reuse" this type of disc and add more files in subsequent sessions, if it has free space, but you still cannot erase or overwrite the existing data; it will remain untouched. You can reuse the dvd if it has space, but you cannot reuse the actual location on the dvd to which data has been burned)
Um... no... you can't write more information to a DVD+R... DVD+RW can be re-written, but once you have finalized the DVD+R, you're done. (Assuming that you are mastering the disc... which is the whole point of using a disc as apposed to a Flash Drive.
Please reread my comment. I'm referring to multiple sessions, not overwriting.
OK, but once you have finalized a disc, you can not add data to it. Why anyone would use the "Live file system" that windows now offers, is beyond me. You might as well use a flash drive.
How is that relevant?
Because most people will be finalizing their disc. So you cannot add data to it once it has been finalized. By definition, a +r or -r disc cannot have any type of change once it has been written to.

My point is this:
If you want to use the disc effectively, you have one shot to write the data to the disc. Otherwise, you are not using the disc efficiently.
Citation needed. Even if most people will be finalizing their discs, that is utterly irrelevant to the technical point I was making.

Clarifying that multisession does NOT equal overwriting a dvd +r doesn't make me wrong (rather the opposite, in fact). I'm really confused as to why you're talking about finalizing when I'm talking about the exactly the opposite operation.

OK, multisession and multiple session actually mean two diffrent things... from your context I miss-understood you. I appoligize. Multiple session implies that you are using multiple closed sessions. (Like you would with an RW disc.) Multisession implies that you are leaving the session open for future additions. (Like a single session disc left open using microsoft's live file system.) Multisession is rather unstable, and pretty much good for nothing, whereas multiple session is pretty stable once the current session is closed.

Again, I miss-understood your context, I should have caught that you were talking about multisession. I appoligize again.

(I also appoligize for any spelling errors in this post. I'm on my droid, so I don't have spell check, and I'm a terrible speller.)
No problem. Conversations can get heated when talking about our passions, eh? :D
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