Question for RW-DL fast re-format
daviburg at windows.microsoft.com
Thu Jun 29 18:18:33 PDT 2006
* From the T10 Reflector (t10 at t10.org), posted by:
* "David Burg" <daviburg at windows.microsoft.com>
Microsoft uses both format types 10h and 15h.
From: owner-mtfuji5 at avc-pioneer.com [mailto:owner-mtfuji5 at avc-pioneer.com] On
Behalf Of keiji_katata at post.pioneer.co.jp
Sent: Wednesday, June 21, 2006 7:42 PM
To: mtfuji5 at avc-pioneer.com
Cc: t10 at t10.org
Subject: RE: Question for RW-DL fast re-format
Thank you everyone.
I would like to write my comment one by one.
[Answer to question]
Mt.Fuji group did not discuss the change of the DVD-RW SL (Single Layer)
Unit Command. There is no change in other media types (DVD-RAM, +RW, etc.)
RW-DL is new media. So I think Pioneer proposal does not change of the drive
[Comment as a chair]
I understand that you do not desire the device behavior which cannot be
[Comment as Pioneer]
We need to focus the behavior of the default type (Formatting on Format Type
00h). Full format of the DVD-RW DL will take more than 1 hour. User never
this long time.
The other hands, 2 hours - 6 hours TV recording on the RW-DL disc may fill
disc up. Once it becomes ROM compatible state (Complete state), another full
format is not necessary.
For example, BD-RE drive dose not fill data area up with null data of the RE
disc by the default format operation. Drive changes Defect List only. If
was no linear replacement (no defect), host can read user data on the RE disc
before file system re-construction. Usually file system re-construction makes
the old user data unreadable.
[Question to software venders]
The RW-DL physical format allows pre-formatted media by the media
If software does not use the Format Unit command Format Type = 00h, we can
this discussion now.
All software venders, how do you think? Does the software use Format Unit
"David Burg" <daviburg at windows.microsoft.com>@avc-pioneer.com on 2006/06/21
mtfuji5 at avc-pioneer.com$B$KJV?.$7$F$/$@$5$$(J
$BAw?.<T(J: owner-mtfuji5 at avc-pioneer.com
$B08 at h(J: <mtfuji5 at avc-pioneer.com>
cc: <t10 at t10.org>
$B7oL>(J: RE: Question for RW-DL fast re-format
Thank you for this host consultation.
We checked this issue at Microsoft optical platform storage and core
file system services.
Most important is we do not want to change existing format code
behavior. Per consistency with DVD-RW SL, existing format code behavior
shall be unchanged. Otherwise it would cause unexpected behavior in our
software. If new format behavior is desired, it needs to be with a new
format code or option.
Also, we do not want vendor specific implementations. If there is a
feature, please make it mandatory. If it is not possible, at least
specify the feature *and the feature availability recognition*.
Please let us know if further clarification is needed.
Research Software Development Engineering Lead,
* For T10 Reflector information, send a message with
* 'info t10' (no quotes) in the message body to majordomo at t10.org
More information about the T10