[JJ_SO]

Toast doesn't give a measured graph of write errors and jitter - it just checks if the DVD/CD is within specifications. I don't see, if the medium is well inmidst the tolerance or just at the limit, the amount of jitter is not visible. On Windows, there once was a quality check for Plextor drives (Plextools Professional), but this was 10 years ago - on DVD RAM there's no check tool for end users (only the toast function OK/not OK) and on bluray not even the lab's testtools are working. I meant something like this:

 



 

Source: PCWelt.de, that CD or DV is close to data loss because of poor burn quality, high PIF values - it would still be ok for Toast, though.

 

The trouble is, scratches, grease and dirt just add to the disc surface and a freshly burnt DVD which was checked and confirmed OK may well be on the upper limit of tolerance