Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

enter image description here

As you can see from the above image, nero is showing some "session is open" in my DVD rewritable disc. The problem is whenever I erase the session it is not getting erased and I am unable to write the remaining part of the disc.
So, the worst part is will I be able to use this dvd-rw again or now it's just a waste scrap?

Nero version is 11
OS win7
AV is KIS2012
Dvd-rw is from Sony company
Dvd drive from samsung sh-s203b with latest firmware

share|improve this question
> So, the worst part is will I be able to use this dvd-rw again or now it's just a waste scrap? Of course you can reuse it; it’s re-writable. Just copy the data from it, erase it, then burn the data back to it properly, making sure to not select the leave option option. – Synetech Aug 19 '12 at 20:52
The problem is that nero or windows is not able to erase it!!!I think this open session is causing problems for nero to erase. – FrozenKing Aug 21 '12 at 4:05
No, there’s no reason that an open session should be a problem. An open session is not a bug, it’s a purposely designed feature. Maybe Windows just doesn’t support open sessions and Nero (which should) is buggy. Try ImgBurn: Tools → Drive → Erase Disc. You can also try to close or finalize the session. – Synetech Aug 21 '12 at 14:59
Thanks @Synetech I will try and reply back.. – FrozenKing Aug 23 '12 at 10:45
ImgBurn is throwing some errors just see the image file ""; – FrozenKing Aug 23 '12 at 11:30
up vote 1 down vote accepted

I got the solution for this problem. The problem was not with the dvd drive but with the lens of dvd drive. Actually, this problem is caused by the accumulation of dust particles in the lens of the dvd drive.

So, to solve this problem I brought a dvd lens cleaner which had a tiny 2 brushes in the sides of the DVD disc which cost below 1$. And after using this, the dvd drive again started working fine.


share|improve this answer
This past weekend I was looking for my brushed-lens-cleaner but couldn’t find it, so seeing your post reminded me. Thanks. (I don’t know where you got the <$1 part though because the one you linked to—and all the others I can find on eBay—are >$2USD/CAD.) – Synetech Sep 4 '12 at 1:06
Thanks for all your help @synetech – FrozenKing Sep 7 '12 at 15:53

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.