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From: Mark Hobley on 21 Jun 2010 02:35
How do I reuse a DVD+RW disk using cdrecord?

Do I need to erase the disk first, or does a subsequent record simply go
over the top?

If I need to erase the disk, how do I do this?

Does cdrecord provide the facility to erase DVD+RW disks?

Mark.

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From: mjt on 21 Jun 2010 05:13
On Mon, 21 Jun 2010 06:35:53 +0000 (UTC)
Mark Hobley <markhobley(a)yahoo.donottypethisbit.co> wrote:

> How do I reuse a DVD+RW disk using cdrecord?

~> man cdrecord
.... or ...
http://cdrecord.berlios.de/private/man/cdrecord/cdrecord.1.html

Just record the new data as if the DVD were blank

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From: Lusotec on 21 Jun 2010 06:08
Mark Hobley wrote:
> How do I reuse a DVD+RW disk using cdrecord?
>
> Do I need to erase the disk first, or does a subsequent record simply go
> over the top?
>
> If I need to erase the disk, how do I do this?
>
> Does cdrecord provide the facility to erase DVD+RW disks?

If possible, I recommend you use a GUI application like K3B (KDE app) or
Brasero (Gnome app) to erase and write CDs or DVDs. Both give you a very
nice and easy to use GUI that hides those details.

Regards.

From: J G Miller on 21 Jun 2010 09:42
On Mon, 21 Jun 2010 06:35:53 +0000, Mark Hobley wrote:

> How do I reuse a DVD+RW disk using cdrecord?
>
> Do I need to erase the disk first

You can do a full erase of the disk if you wish, BUT the convention
is that you are recommended not to with DVD+RW, once the disk has
been initially formatted for use.

You just write over the top of what is already there.

From <http://www.isobuster.COM/tips.php?tips_page=9>

QUOTE

The big exception to all the above is DVD+RW (DVD plus RW).

The designers of the format were clever enough to decide that
there shouldn't be an erase function for this format at all.

After all a full erase only adds to the so called DOW (Disc Over-Write)
and thus reduces the quality of the media. If a full erase is truly
required by the user then the application software can still simply
write a neutral pattern over the complete surface of the disc with
the same effect.

And as a DVD+RW can have only one track in one session, changing the
inner circle structures is not needed either. If there is a track
already ... well then there is a track already .. why change that ?

If one wants to write new content then the old data can simply be
overwritten. Of course this also positively influences background
format and other features I won't go in to now.

In other words there is no erase command that an application can send.

If a user wants to quick erase a DVD+RW then the application software
must be clever enough to simply write some neutral data over file-system
structures (e.g. ISO9660 and UDF etc).

And in fact that's what most applications do when they quick erase a DVD+RW.

UNQUOTE
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