Editing PS2 Savedata

See also [https://www.psdevwiki.com/ps2/Savedata PS2 savedata page on PS2 dev wiki].

{{Savedata common terms}}

<div style="float:right">[[File:Memory_Card_Utility_(PS_PS2).jpg|400px|thumb|right| ]]<br>[[File:Saved Data Utility (PS2).jpg|400px|thumb|right| ]]</div>

{| class="wikitable"
|-
! Storage Media !! Path !! Import/Export file conversions
|-
| Internal HDD || dev_hdd0/savedata/vmc/'''<virtual_memcard>'''.VM2 ||
|-
| rowspan="4" | Internal HDD<br>Only <abbr title="ps2_netemu.self">"PS2 Classics"</abbr> || dev_hdd0/home/'''<userid>'''/ps2emu2_savedata/'''<TITLE_ID>'''/ICON0.PNG || Copied from dev_hdd0/game/'''<TITLE_ID>'''/ICON0.PNG
|-
| dev_hdd0/home/'''<userid>'''/ps2emu2_savedata/'''<TITLE_ID>'''PARAM.SFO || Copied from dev_hdd0/game/'''<TITLE_ID>'''/PARAM.SFO <abbr title="is needed to check if the files are exactly the same">?</abbr>
|-
| dev_hdd0/home/'''<userid>'''/ps2emu2_savedata/'''<TITLE_ID>'''/SCEVMC0.VME || <abbr title="and updated with the new savedata info">Copied</abbr> from dev_hdd0/game/'''<TITLE_ID>'''/USRDIR/SAVEDATA/SCEVMC0.VME
|-
| dev_hdd0/home/'''<userid>'''/ps2emu2_savedata/'''<TITLE_ID>'''/SCEVMC1.VME || <abbr title="and updated with the new savedata info">Copied</abbr> from dev_hdd0/game/'''<TITLE_ID>'''/USRDIR/SAVEDATA/SCEVMC1.VME
|-
| External USB || dev_usb0/PS3/EXPORT/PSV/'''<Save_ID>'''.PSV || When exporting to USB the '''MC_Slot''' is extracted from VM2 an saved individually as a PSV
|-
| rowspan="4" | External USB<br>Only <abbr title="ps2_netemu.self">"PS2 Classics"</abbr> || dev_usb0/PS3/EXPORT/PS2SD/'''<TITLE_ID>'''/ICON0.PNG || Copied from the savedata folder
|-
| dev_usb0/PS3/EXPORT/PS2SD/'''<TITLE_ID>'''PARAM.SFO || Added a signature at the end of the file (out of the SFO structure)
|-
| dev_usb0/PS3/EXPORT/PS2SD/'''<TITLE_ID>'''/SCEVMC0.VME ||
|-
| dev_usb0/PS3/EXPORT/PS2SD/'''<TITLE_ID>'''/SCEVMC1.VME ||
|-
| External MC || mc_root/ || Raw copy from/to a real PS2 Memory Card using a [[PlayStation_Card_Adapter| Memory Card Adapter]]
|}

*'''ICON0.PNG''' in the table represents all the multimedia files supported by the XMB for this format like images, audio, etc... same format than PS3. See: [[Content_Information_Files#Saved_Data_Utility_.28PS3.29|Content Information Files - Saved Data Utility (PS3)]]

== PS2 Memory Card Formats ==

=== PS2 Memory Card (original) ===

The PS2 Memory Card file system has a fairly simple design, with some allowances made for the limitations of flash memory. Its overall structure is similar to the well known MS-DOS FAT file system. It uses a file allocation table (FAT) to keep track of allocated space and a hierarchical directory system where all of a file's metadata is stored in its directory entry. Like the FAT file system, which groups disk sectors into clusters, the PS2 memory card file system groups flash memory pages in to clusters. On standard PS2 memory cards, the cluster size 1024 bytes, or 2 pages long.

*The Superblock
The key to the PS2 memory card file system is the superblock. Located in the first page of the memory, this is the only part of the file system with a fixed location. While some things like the do end up in fixed locations on standard 8M memory cards, you shouldn't rely on this. 

{| class="wikitable" style="font-size:small;"
|-
! Block Nº !! Cluster Nº !! Page Nº !! Offset !! Length !! Name !! Example !! Description
|-
| rowspan="21" style="background-color:#DDDDDD;" | 0 <br /> '''superblock''' || rowspan="20" style="background-color:#DDDDDD;" | 0 || rowspan="19" style="background-color:#DDDDDD;" | 0 || 0x000000 || 0x01C (28 bytes) || '''magic''' || Sony PS2 Memory Card Format || Memory Card identifyer
|-
| 0x00001C || 0x00C (12 bytes) || '''version''' || 1.2.0.0 || Memory Card format version. '''(1.2.0.0 = full support for bad_block_table map)'''
|-
| 0x000028 || 0x002 (2 bytes) || '''page_len''' || 512 || Page size in bytes (without ECC)
|-
| 0x00002A || 0x002 (2 bytes) || '''pages_per_cluster''' || 2 || Number of pages in a cluster
|-
| 0x00002C || 0x002 (2 bytes) || '''pages_per_block''' || 16 || Number of pages in an block
|-
| 0x00002E || 0x002 (2 bytes) || ''not used'' || FF00 ||
|-
| 0x000030 || 0x004 (4 bytes) || '''clusters_total''' || 8192 || Total number of clusters
|-
| 0x000034 || 0x004 (4 bytes) || '''alloc_start''' || 41 || First allocatable cluster number. Cluster values in the FAT and directory entries are relative to this
|-
| 0x000038 || 0x004 (4 bytes) || '''alloc_end''' || 8135 || Cluster offset number after the highest allocatable cluster. Relative to '''alloc_start'''. Not used.
|-
| 0x00003C || 0x004 (4 bytes) || '''cluster_rootdir''' || 0 || Cluster offset of the first cluster of the root directory. Relative to '''alloc_start'''. Must be zero.
|-
| 0x000040 || 0x004 (4 bytes) || '''bblock1''' || 1023 || Backup1 block number
|-
| 0x000044 || 0x004 (4 bytes) || '''bblock2''' || 1022 || Backup2 block number
|-
| 0x000050 || 0x080 (128 bytes) || '''ind_fat_table''' || 8 || '''Indirect FAT Table''' cluster number
|-
| 0x0000D0 || 0x080 (128 bytes) || '''bad_block_table''' || -1 || Bad blocks table (damaged blocks index)
|-
| 0x000150 || 0x001 (1 byte) || '''card_type''' || 2 || Memory card type '''(2 = PS2 memory card)'''
|-
| 000x0151 || 0x001 (1 byte) || '''card_flags''' || 0x52 || Memory Card features '''(0x01 = ECC support, 0x08 = Bad Block support, 0x10 = Erased state zeroed)'''
|-
| 0x000152 || 0x002 (2 byte) || ''not used'' || FF ||
|-
| 0x000154 || 0x0BC (188 bytes) || ''unknown'' || ||
|-
| 0x000200 || 0x010 (16 bytes) || '''ECC''' || || Error Correction Code. The last 16 bytes of all the pages are reserved for this code. See explain below
|-
| style="background-color:#DDDDDD;" | 1 || || || ''not used'' || ||
|-
| style="background-color:#DDDDDD;" | Up to 7 || style="background-color:#DDDDDD;" | Up to 15 || || || ''not used'' || ||
|-
| rowspan="5" style="background-color:#DDDDDD;" | 1 || rowspan="2" style="background-color:#DDDDDD;" | 8 <br /> '''ind_fat_table''' || style="background-color:#DDDDDD;" | 16 || 0x002100 || 0x210 (528 bytes) || '''Indirect FAT Table''' || || rowspan="18" style="background-color:#DDDDDD;" | '''FAT File System'''
|-
| style="background-color:#DDDDDD;" | 17 || || || ||
|-
| rowspan="2" style="background-color:#DDDDDD;" | 9 || style="background-color:#DDDDDD;" | 18 || 0x002520 || 0x210 (528 bytes) || '''FAT Table''' ||
|-
| style="background-color:#DDDDDD;" | 19 || || || ||
|-
| style="background-color:#DDDDDD;" | Up to 15 || style="background-color:#DDDDDD;" | Up to 31 || || || ||
|-
| style="background-color:#DDDDDD;" | Up to 4 || || || || || ||
|-
| rowspan="5" style="background-color:#DDDDDD;" | 5 || rowspan="2" style="background-color:#DDDDDD;" | 40 || style="background-color:#DDDDDD;" | 80 || || || ||
|-
| style="background-color:#DDDDDD;" | 81 || || || ||
|-
| rowspan="2" style="background-color:#DDDDDD;" | 41 <br /> '''alloc_start''' <br /> '''cluster_rootdir''' || style="background-color:#DDDDDD;" | 82 || 0x00A920 || 0x210 (528 bytes) || '''Allocatable Clusters''' ||
|-
| style="background-color:#DDDDDD;" | 83 || || || ||
|-
| style="background-color:#DDDDDD;" | Up to 47 || style="background-color:#DDDDDD;" | Up to 95 || || || ||
|-
| style="background-color:#DDDDDD;" | Up to 1004 || || || || || ||
|-
| rowspan="5" style="background-color:#DDDDDD;" | 1005 || rowspan="2" style="background-color:#DDDDDD;" | 8040 || style="background-color:#DDDDDD;" | 16080 || || || ||
|-
| style="background-color:#DDDDDD;" | 16081 || || || ||
|-
| rowspan="2" style="background-color:#DDDDDD;" | 8041 || style="background-color:#DDDDDD;" | 16082 || 0x819120 || 0x210 (528 bytes) || '''Reserved Clusters''' ||
|-
| style="background-color:#DDDDDD;" | 16083 || || || ||
|-
| style="background-color:#DDDDDD;" | Up to 8047 || style="background-color:#DDDDDD;" | Up to 16095 || || || ||
|-
| style="background-color:#DDDDDD;" | Up to 1021 || || || || || ||
|-
| rowspan="3" style="background-color:#DDDDDD;" | 1022 <br /> '''bblock2''' || rowspan="2" style="background-color:#DDDDDD;" | 8176 <br /> '''alloc_end''' || style="background-color:#DDDDDD;" | 16352 || 0x83BE00 || 0x210 (528 bytes) || '''Temporal Data''' || || rowspan="3" style="background-color:#DDDDDD;" | '''Backup Block 2''' <br />  Used to store the number of the block that is going to be programmed
|-
| style="background-color:#DDDDDD;" | 16353 || || || ||
|-
| style="background-color:#DDDDDD;" | Up to 8183 || style="background-color:#DDDDDD;" | Up to 16367 || || || ||
|-
| rowspan="3" style="background-color:#DDDDDD;" | 1023 <br /> '''bblock1''' || rowspan="2" style="background-color:#DDDDDD;" | 8184 || style="background-color:#DDDDDD;" | 16368 || 0x83DF00 || 0x210 (528 bytes) || '''Temporal Data''' || || rowspan="3" style="background-color:#DDDDDD;" | '''Backup Block 1''' <br /> Used to store a copy of the data that is going to be programmed to a block
|-
| style="background-color:#DDDDDD;" | 16369 || || || ||
|-
| style="background-color:#DDDDDD;" | Up to 8191 <br /> '''clusters_total''' || style="background-color:#DDDDDD;" | Up to 16383 || || || ||
|}

A standard Ps2 Memory Card is composed by 1024 blocks, each block contains 16 pages of 528 bytes, for a total of 528*16*1024=8.650.752 bytes (0x840000)

Total ECC data is 16*16*1024=262.144 bytes

This gives an available space to store data of: Total-ECC = 8650752-262144 = 8388608 bytes = 8mb

*Backup Blocks
Two complete blocks are reserved to deal with the possibility of the memory card being removed by the user when data is being saved. Writing data to card requires erasing and reprogramming an entire block

Before writing a block, both '''bblock1''' and '''bblock2''' are erased. Then a copy of the new data that is going to be written is stored in '''bblock1''', and the number of the block that is going to be written is stored in '''bblock2'''. The block being programmed is then erased and writed. Finally, '''bblock2 is erased'''

Recovery caused by removal of the memory card is implemented whenever a memory card is inserted into the PS2 by checking '''bblock2''', if it's not erased, then programming is assumed to have not been completed. The contents of '''bblock1''' are then copied to the block given in '''bblock2'''. Then '''bblock2''' is erased

*Error Correction Code (ECC)
The data area of each page (512 bytes) is divided into 128 byte long chunks and for each chunk a simple [[http://en.wikipedia.org/wiki/Hamming_code 20-bit Hamming code]] is calculated and stored in three bytes

The first byte contains the column (or bit-wise) parity bits, with the even groups in the lower nibble and the odd groups in the upper nibble. The second and third bytes contain the even and odd groups respectively for the line (or byte-wise) parity bits

The 3 ECC bytes for each of the 4 chunks are stored in order in the page's spare area for a total of 12 bytes


Source: [[http://www.csclub.uwaterloo.ca:11068/mymc/ps2mcfs.html PlayStation 2 Memory Card File System - By Ross Ridge]]

=== PS2 Virtual Memory Card (.VM2)===

File structure is the same than a "original PS2 memory card", there are not apparent differences. 
Maximum VM2 Memory Card size that PS3 can handle is 32MB (or 63MB, but is speculation). 64MB card cause bootloop because indexer can't handle nothing bigger than uint_16 range for memory card free space entry, 65535KB (63.99 MB) = 0xFFFF, while 64 MB memory card is 65536KB (0x10000) so it exceed uint_16 limit, causing unrecoverable database corruption until memory card is deleted somehow from hdd. Probably 63MB VM2 card will work fine, but is just speculation.   

*Speculation
Last place to store a PS3 identifyer is inside the FAT filesystem ?... maybe there is none

=== PS2 Single Save file (.PSV) ===

A .PSV file is a PS2 savedata in "PS3 format". When exporting a save from a PS2 internal memory card to a USB device the Game Saves are converted to a .PSV file in PS3 format. The name of the exported file is the identifier of the block on hexadecimal format.

The file format has a 0x84 bytes header, in a PS1 Memory Card every slot is 0x2000 so if the savedata file is composed by only one slot the total file size is 0x2084 (8.324 bytes). In PS3 XMB, it is displayed as 8 kB.

Note: A part of the header is common for PS1 (PS2 header is bigger than PS1).

 Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
 
 00000000  00 56 53 50 00 00 00 00  77 77 77 2e 62 75 63 61  |.VSP....www.buca|
 00000010  6e 65 72 6f 2e 63 6f 6d  2e 61 72 00 fa 09 5f f3  |nero.com.ar..._.|
 00000020  8b c9 da 44 2f 08 4f 56  28 91 19 ea a3 23 08 e1  |...D/.OV(....#..|
 00000030  00 00 00 00 00 00 00 00  2c 00 00 00 02 00 00 00  |........,.......|
 00000040  64 69 01 00 f4 66 01 00  c4 03 00 00 54 01 00 00  |di...f......T...|
 00000050  98 83 00 00 54 01 00 00  98 83 00 00 54 01 00 00  |....T.......T...|
 00000060  98 83 00 00 03 00 00 00  00 2e 17 10 1a 08 e4 07  |................|
 00000070  00 2e 17 10 1a 08 e4 07  05 00 00 00 27 84 00 00  |............'...|
 00000080  42 41 53 4c 55 53 2d 32  30 39 36 33 46 46 31 32  |BASLUS-20963FF12|
 00000090  30 30 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |00..............|
 000000a0  00 2e 17 10 1a 08 e4 07  00 2e 17 10 1a 08 e4 07  |................|
 000000b0  98 83 00 00 97 84 00 00  73 74 61 74 69 63 2e 69  |........static.i|
 000000c0  63 6f 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |co..............|
 000000d0  00 00 00 00 00 00 00 00  54 01 00 00 00 2e 17 10  |........T.......|
 000000e0  1a 08 e4 07 00 2e 17 10  1a 08 e4 07 08 e2 00 00  |................|
 000000f0  97 84 00 00 42 41 53 4c  55 53 2d 32 30 39 36 33  |....BASLUS-20963|
 00000100  46 46 31 32 30 30 00 00  00 00 00 00 00 00 00 00  |FF1200..........|
 00000110  00 00 00 00 ec 84 00 00  00 2e 17 10 1a 08 e4 07  |................|
 00000120  00 2e 17 10 1a 08 e4 07  c4 03 00 00 97 84 00 00  |................|
 00000130  69 63 6f 6e 2e 73 79 73  00 00 00 00 00 00 00 00  |icon.sys........|
 00000140  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 00000150  f4 66 01 00 00 00 01 00  01 00 00 00 06 00 00 00  |.f..............|

====Filename Format====
The Filename is generated from the saved ps2 data with the format:
   Internal PS2 ID String followed by the Description Text in HEX
   For the above header the Exported PSV file name would be "BASLUS-20963464631323030.PSV"

{| class="wikitable"
|-
! Offset !! Length !! Example !! Description
|-
|0x00 || 0x08 || 00 56 53 50 00 00 00 00 || " VSP"
|-
|0x08 || 0x14 || 77 77 77 2E 62 75 63 61 6E 65 72 6F 2E 63 6F 6D 2E 61 72 00 || Key seed, any value is accepted (not validated by the PS3)
|-
|0x1C || 0x14 || FA 09 5F F3 8B C9 DA 44 2F 08 4F 56 28 91 19 EA A3 23 08 E1 || Sha1 hmac digest
|-
|0x30 || 0x08 || 00 00 00 00 00 00 00 00 || padding related with the alignment of the previous 2 values ?
|-
|0x38 || 0x04 || 2C 00 00 00 || PS1=0x14, PS2=0x2C
|-
|0x3C || 0x04 || 02 00 00 00 || PS1=0x1, PS2=0x2
|-
|0x40 || 0x04 || 64 69 01 00 || '''Used Bytes''' (Size displayed on XMB).
|-
|0x44 || 0x04 || F4 66 01 00 || start offset in file of icon.sys (start of "'''PS2D'''" area in PS2)
|-
|0x48 || 0x04 || C4 03 00 00 || icon.sys file size
|-
|0x4C || 0x04 || 54 01 00 00 || position of 1st icon (start offset)
|-
|0x50 || 0x04 || 98 83 00 00 || size of 1st icon
|-
|0x54 || 0x04 || 54 01 00 00 || position of 2nd icon (start offset)
|-
|0x58 || 0x04 || 98 83 00 00 || size of 2nd icon
|-
|0x5C || 0x04 || 54 01 00 00 || position of 3rd icon (start offset)
|-
|0x60 || 0x04 || 98 83 00 00 || size of 3rd icon
|-
|0x64 || 0x04 || 03 00 00 00 || number of files in the .PSV container
|-
|0x68 || 0x38 || 00 2E 17 10 .. || PS2 Main Dir Info
|-
|0xA0 || 0x3C || 00 2E 17 10 .. || PS2 File Info (one for each file in the folder)
|-{{cellcolors|lightgrey}}
| colspan="4" |
|-
|0x0166F4 || 0x3C4 || 50 53 32 44 || "'''PS2D'''" icon.sys file, see PS2 format
|-
|}

*Notes:

*When trying to copy not valid save data:
**from modified data : During process of copy: "the data is corrupted."

=== Encrypted Virtual Memory Card (.VME) ===

When exporting Game Saves for "PS2 classics" (CATEGORY 2P) to a external USB drive there is a "rare" PARAM.SFO exported. This PARAM.SFO seems to be a copy of the main PARAM.SFO from the installed game folder with an added "signature" "injected" at the end of the file (out of his structure) with a length of 20 bytes. Is supposed to be a security feature when exporting the gamesave, is not confirmed if this PARAM.SFO (with the injected "signature" out of his structure) exists in the internal HDD (when importing, or present at some time with the "PS2 virtual memory cards").

* PSN PS2 games do not save to VM cards in the same way to original PS2 games and PS1 games do.
* Each user who plays a PSN PS2 Game and makes a save, generates two VM cards (one for each slot) especially for that user account, for that game.
* Each time the game is loaded the user selected VM cards(chosen from the VMC ulitity) are um-mounted and the user's save file for that game mounts the dedicated PS2 VM cards to the PS3 Virtual MC slots.
* When the game is quit, the dedicated VM cards are un-mounted. But for some reason the user selected VM cards are not re-mounted, this is when I knew they mounted dedicated VM cards for each save.

* The save file structure goes like this:
 /PS3/EXPORT/PS2SD/XXXX11111/ICON0.PNG
                                             PARAM.SFO
                                             SCEVMC0.VME
                                             SCEVMC1.VME
 
 Side note: "XXXX11111" will be different to the Title ID inside the Param.sfo. Inside the Param.sfo is the original title ID of the game when it was a PS2 Disc Game.
 
* The black area of the param.sfo is only in the exported save file of the PS2 game. Also if the black area is not present in the save param.sfo, the PS3 considers it corrupt
* If the PSN title id, used as the name for directory on the USB (/PS3/EXPORT/PS2SD/<PSN title id>/) is changed, then it is considered corrupt.

== PS2 Memory Card Tools ==

[http://www.csclub.uwaterloo.ca:11068/mymc/ mymc] is a public domain command line utility for working with PlayStation 2 memory card images (.ps2) as used by the PlayStation 2 emulator PCSX2. It allows save files in the MAX Drive (.max), EMS (.psu), SharkPort (.sps), X-Port (.xps) and Code Breaker (.cbs) formats to be imported directly into these images. It can also export save files in eiter the MAX Drive and EMS formats. See the README.txt file included in the distribution below for more details. 

=== Extracting and Injecting single PS2 Game Savedata on PC ===

The method is the same one used in PS1 (see [[PS1_Savedata#Extracting_and_Injecting_single_PS1_Game_Savedata_on_PC|Extracting and Injecting single PS1 Game Savedata on PC]]), but for PS2 the file format is: '''.VM2''' (a virtual PS2 memory card in PS3 format), and '''.PS2''' (a 1:1 raw copy of a PS2 memory card). Both are the same.

The PC program to manage this '''.PS2''' memory cards is "mymc" and also can be generated by the emulator "PCSX2". See http://wiki.pcsx2.net/index.php?title=Memcard.

*External forums manuals:
http://psx-scene.com/forums/f177/tutorial-ps2-psu-saves-ps3-internal-memory-card-without-memory-card-adaptor-103436/

=== Editing PS2 Game Savedata icons on PC===

In PS2 save Games the icon is a file with the extension '''.icn''' (any name is valid), is "linked" to the save game by the file '''icon.sys'''. The PC program "PS2 SaveBuilder v0.8" can generate this 2 files (included a black default icon)... the icon can be replaced later.

The format supports 3D objects (e.g: save games of tomb raider with a figurine of lara croft)

The program "bmp2icon.exe by sjeep" can generate a '''.icn''' in the correct format for importing to "PS2 SaveBuilder v0.8", additionally it can add a 3d object where your image is applyed as a texture over the faces of a basic 3D object, the options are: 3D rectangle, 3D cube, of flat square

The source image to importing in "bmp2icon.exe by sjeep" must be a 24-bit 128x128 pixel .BMP

{{File Formats}}<noinclude>[[Category:Main]]</noinclude>