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View Full Version : Relase Group Talk about Dummy Data on 360 Titles...



Zeus
12-24-2005, 09:00 PM
Release group CLEAR have put together some information regarding the dummy data on Xbox 360 games in their latest nfo file. Click readmore to check out what they had to say.



To verify, we've run extensive tests on PI's/RADIAN's releases, and all
their md5 sums match 100% with ours.

We feel it may be time to get together and hash out some scene rules as
this starts picking up momentum -- dummy space, rar volume size, etc.

We're not certain of the reasons behind PI/RADIAN not stripping dummy
space (don't know how? credit whores? lazy? jk, it's fun to speculate!),
but our rationale for removing it is a such:

1) We have no way of knowing if the dummy data is used (historically
it rarely is)
2) Until the time comes when these are bootable and we can determine
with certainty that the dummy space is necessary, it makes no sense
to be passing around 7GB files for every release
3) If we're eventually going to be able to play from a HDD, the dummy
space would be useless anyway
4) If we get a modchip with a decent bios, why would they keep the need
for every disc to be 7GB with a bunch of dummy space?
5) Dummy space certainly wouldn't be used in-game -- if it's not a file,
you don't have access to it
6) Someone always has access to the originals again if needed
7) Who the hell wants to blow the extra bw/space/time to download/archive
empty space? For instance, Madden PI 70x100MB vs. Madden CLEAR 65x50MB
(less than half the size!)
8) Dummy space isn't going to magically allow a backup to boot

As mentioned in our last nfo, unlike PI/RADIAN's raw dumps, ours are in
actual .iso format, and do not require PI's special extractor tool, but
can instead be opened, viewed and extracted using many of the existing
great Xbox iso tools already out there (Qwix, xISO, etc.).

Also included alongside our .iso is a layout file (.lyt). This can
optionally be used with programs such as MooGUI and the forthcoming
Qwix 2.0 to create an .iso file that takes maximum advantage of DVD
spindle rotation speeds for the DVD size (single of dual layer) you're
burning. The arrangement of files on Xbox and Xbox 360 game discs is
determined by developers through extensive testing of file access
patterns during actual gameplay. Layout (.lyt) files list the exact
placement of all files and directories on an original Xbox or Xbox
360 disc. They can also be used to optimize old backups that one might
play frequently that don't perform as well as they could. As .lyt
support is gradually being added to more ISO creation programs, sites
will begin hosting archives of downloadable .lyt files.


News Source: <A href="http://www.nforce.nl/index.php?switchto=nfos&menu=quicknav&item=viewnfo&id=100960" target="_blank">nforce.nl</a>

krawhitham
12-24-2005, 09:26 PM
madden was half the size because CLEAR's release did not have data in the files which means it will compress alot better



PI - qkl_fe2ig.AST :

Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F
00000000 42 47 46 41 31 2E 30 35 FA 51 18 00 50 05 00 00 BGFA1.05·Q..P...
00000010 40 00 00 00 00 00 00 00 AC 6F 00 00 00 00 00 00 @.......¼o......
00000020 00 01 08 04 04 03 04 00 07 00 00 00 00 00 00 00 ................
00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000040 15 18 06 18 D9 B6 E5 8F A8 B8 70 79 74 76 45 53 ....┘╢σÅ¿╕pytvES

CLEAR - qkl_fe2ig.AST :

Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000040 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

Dirtie
12-25-2005, 04:05 PM
I don't know how they can say this - just look at the GC releases. At the start all the garbage data was ripped out, then once the Viper was released, people realised we needed it again because it gave better compatibility. These guys should wake up.

momdad
12-25-2005, 08:42 PM
madden was half the size because CLEAR's release did not have data in the files which means it will compress alot better

The information unrelated to any specific release. Their madden release was a bad iso, but this new NBA one is 100% valid, as are the points the make.

Vintage
12-26-2005, 07:48 AM
It seems the same with the psp, it has the dummy files, rip em and rebuild the iso and it works fine, but that is off a MS, not sure how a DVD works, might be different, the dummy files on the psp just makes the umd run smoother, so i think the dummy files are needed on the xbox360 games.

krawhitham
12-27-2005, 02:48 AM
The information unrelated to any specific release. Their madden release was a bad iso, but this new NBA one is 100% valid, as are the points the make.



this is from their nfo

Who the hell wants to blow the extra bw/space/time to download/archive
empty space? For instance, Madden PI 70x100MB vs. Madden CLEAR 65x50MB
(less than half the size!)


they are the ones comparing madden not me, and thier madden is missing alot of data. That is why it compresses better