Re: Blanking/Formating a BD-RE
> 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:
> [root@smooth /]# 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.