it is supossed the two DVD/CD combo Toshiba can write almost every weak sector, but with safedisc 2.90, seems it can't.
Backup will not play on my SD-R1402, but original does, so it's evident weak sectors are not correctly burned.
I have burned all my test at 12x, maybe this could be the problem, but will not bet on it.
Can anyone explain me why some drives can and other that should can't?

Thanks!