> The thing I want to get is the following: I need to get the difference > between a written bd-re (containing toc/filesytem/data/..) and an > "empty" one.
For isofs 'dd if=/dev/dvd skip=32769 bs=1 count=5' and comparing its output to CD001 would do the trick. Note that for virgin media dd would return i/o error, but the outcome would be non-CD001 string and media would be recognized as "empty" anyway. Naturally for other file systems empty-check would be different and might have to be more elaborate. > But here my problem starts. When I do a dvd+rw-mediainfo on a media > which was formatted (after it was written with an iso) with > dvd+rw-format I get the following info: > > [EMAIL PROTECTED] /]# dvd+rw-mediainfo /dev/hdb > GET [CURRENT] CONFIGURATION: > Mounted Media: 43h, BD-RE > READ FORMAT CAPACITIES: > formatted: 11826176*2048=24220008448 > READ CAPACITY: 11826176*2048=24220008448 BD-RE has no notion of blanking and once minimally formatted it appears to user as fully formatted forever. You can wipe the data, you can re-format, but you can't make it appear virgin. A. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]