CVM: Difference between revisions

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CVM is an archive format used in the PS2 versions of [[Yakuza]] and [[Yakuza 2]], in addition to [[Ryu Ga Gotoku: Kenzan!]] and [[Yakuza: Dead Souls]]. It was developed by CRI Middleware and based on ISO9660. It is also known internally as "ROFS" format. Essentially, they are ISO files with a special header (0x1800 bytes).
=List of games using=
The games listed use .CVM files:
* [[Yakuza]]
* [[Yakuza 2]]
* [[Ryu Ga Gotoku: Kenzan!]]
* [[Yakuza: Dead Souls]]


CVM is a data archive that is being used on [[Yakuza]] and [[Yakuza 2]]. It was developed by CRI Middleware and based on ISO9660. They're basically ISO with few extra steps.
=Modify=
<br>
'''<big>In order to extract CVM archives, you will need [[cvm_tool]].</big>'''
With that being said, these files which can be found on the mentioned games above are encrypted. They need a special tool and password in order to extract them.
<br>
=Extraction=
More info coming soon!


==== [[Ryu Ga Gotoku: Kenzan!]] and [[Yakuza: Dead Souls]] use CVM for Auth audio. They are not encrypted. ====
To split/create any CVM from either game, the command would be:


<code>cvm_tool.exe split FILENAME.CVM FILENAME.iso FILENAME.hdr</code>
<code>cvm_tool.exe mkcvm FILENAME.CVM FILENAME.iso FILENAME.hdr</code>
==== For Yakuza and Yakuza 2 (PS2), they are encrypted.  ====
* The '''password''' for [[Yakuza]] and [[Yakuza 2]] is <code>qi2o@9a!</code>
To split OGRE.CVM from Yakuza, an example command would be:
<code>cvm_tool.exe -p qi2o@9a! split OGRE.CVM OGRE.iso OGRE.hdr</code>
To create a cvm out of OGRE.ISO into OGRE.CVM, the command would be:<br><code>cvm_tool.exe -p qi2o@9a! mkcvm OGRE.CVM  OGRE.iso OGRE.hdr</code>
[[Category:File_Formats]]
[[Category:File_Formats]]

Latest revision as of 20:26, 2 October 2025

CVM is an archive format used in the PS2 versions of Yakuza and Yakuza 2, in addition to Ryu Ga Gotoku: Kenzan! and Yakuza: Dead Souls. It was developed by CRI Middleware and based on ISO9660. It is also known internally as "ROFS" format. Essentially, they are ISO files with a special header (0x1800 bytes).

List of games using

The games listed use .CVM files:

Modify

In order to extract CVM archives, you will need cvm_tool.

Ryu Ga Gotoku: Kenzan! and Yakuza: Dead Souls use CVM for Auth audio. They are not encrypted.

To split/create any CVM from either game, the command would be:

cvm_tool.exe split FILENAME.CVM FILENAME.iso FILENAME.hdr

cvm_tool.exe mkcvm FILENAME.CVM FILENAME.iso FILENAME.hdr

For Yakuza and Yakuza 2 (PS2), they are encrypted.

To split OGRE.CVM from Yakuza, an example command would be:

cvm_tool.exe -p qi2o@9a! split OGRE.CVM OGRE.iso OGRE.hdr

To create a cvm out of OGRE.ISO into OGRE.CVM, the command would be:
cvm_tool.exe -p qi2o@9a! mkcvm OGRE.CVM OGRE.iso OGRE.hdr