You're right, the drive reports the DVD+RW media as blank until it's been formatted. Since then there is no way to "unformat" it, you can just write zeroes to a couple of sectors at the beginning of the disc and this may vary depending on the software you use. Generally the same applies to DVD-RAM, but here you can have a failed format which is not reflected in media status but no reading or writing is possible then, so you have to read format status from the unit first. Write protected DVD-RAM disc is seen just like DVD-ROM. And there is no "blank" DVD-RAM like DVD+RW.
Above there was also a discussion which relates to bug 502143 which I suppose I managed to patch (this is rather a trivial patch), the remaining issue has nothing to do with udev. You can find a recent and most complete fixed cdrom_id at my ppa. I didn't try DVD-RW in restricted overwrite mode yet. -- cdrom_id: Does not recognize blank rewritable DVDs https://bugs.launchpad.net/bugs/581925 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs