Nintendo Switch Brew

Flash Filesystem: Difference between revisions

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== Boot Partitions ==
== Boot Partitions ==
'''Boot Partition 0 (0 of 1)'''
'''Boot Partition 0 (0 of 1)'''


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|-
|-
|  0x184000
|  0x184000
|  0x20
|  0x200
|  [2.0.0+] Unknown SHA-256 hash. Changes every boot when the main menu is loaded.
|  [2.0.0+] [[#NAND Patrol|NAND Patrol area]]
|-
|  0x184020
|  0x8?
|  [2.0.0+] Unknown counter. Increments by 0x400 on every boot when the main menu is loaded.
|}
|}


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=== System Update Control ===
=== System Update Control ===
The 0x4000 bytes at offset 0xFC000 are used by [[NS_Services|NS]] for keeping track of the status of a system update. This area is used by the [[NS_Services#ns:su|ISystemUpdateControl]] commands "ApplyDownloadedUpdate", "ApplyCardUpdate" and "ApplyReceivedUpdate".
The 0x4000 bytes at offset 0xFC000 are used by [[NS_Services|NS]] and [[Boot|boot]] for keeping track of the status of a system update. This area is used by the [[NS_Services#ISystemUpdateControl|ISystemUpdateControl]] commands [[NS_Services#ApplyDownloadedUpdate|ApplyDownloadedUpdate]], [[NS_Services#ApplyCardUpdate|ApplyCardUpdate]] and [[NS_Services#ApplyReceivedUpdate|ApplyReceivedUpdate]].


{| class="wikitable" border="1"
{| class="wikitable" border="1"
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| 0x0
| 0x0
| 0x1
| 0x1
| Set to 1 during a system update. Cleared after [[NCM_services|NCM]] finishes updating all titles.
| BootImages status. Set to 1 by [[NS_Services|NS]] during a system update and cleared by [[Boot|boot]] after restarting.
|-
|-
| 0x1
| 0x1
| 0x1
| 0x1
| Set to 1 during a system update. Cleared after [[NCM_services|NCM]] finishes updating all titles.
| BootImagesSafe status. Set to 1 by [[NS_Services|NS]] during a system update and cleared by [[Boot|boot]] after restarting.
|}
|}


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|}
|}


The active bootloader's version (offset 0x2330 in the BCT) acts as an index to control which keyblob should be installed into the system.
The active bootloader's version (offset 0x2330 in the BCT) acts as an index (<code>version-1</code>) to control which keyblob should be installed into the system.
[[NS_Services|NS]] uses this during system updates to install the keyblob into the [[BCT#customer_data|customer data]] section in BCTs (offset 0x450).
[[NS_Services|NS]] uses this during system updates to install the keyblob into the [[BCT#customer_data|customer data]] section in BCTs (offset 0x450).


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The currently active keyblob is officially known as "SecureInfo".
The currently active keyblob is officially known as "SecureInfo".
=== NAND Patrol ===
The 0x200 bytes at offset 0x184000 are used by [[Filesystem_services|FS]] for keeping track of NAND patrolling.
{| class="wikitable" border="1"
|-
!  Offset
!  Size
!  Description
|-
| 0x0
| 0x20
| HMAC-SHA-256 over the next 0x1E0 bytes
|-
| 0x20
| 0x4
| Last patrolled NAND block's offset
|-
| 0x24
| 0x4
| NAND patrol count
|-
| 0x28
| 0x1D8
| Unused, all-zero.
|}


== User Partitions ==
== User Partitions ==
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|-
|-
!  Partition name
!  Partition name
!  Partition type GUID
!  Offset
!  Offset
!  Size
!  Size
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|-
|-
|  N/A
|  N/A
|
|  0x0
|  0x0
|
|  
|  20
|  20
|  No
|  No
|  GPT header, Bis-storage also allows raw access to the entire NAND eMMC sectors starting at sector0. The official name for this partition is "UserDataRoot".
|  GPT header, Bis-storage also allows raw access to the entire NAND eMMC sectors starting at sector0. The official name for this partition is "UserDataRoot".
|-
|-
|  [[Calibration|PRODINFO]]
|  [[Calibration#CalibrationBinary|PRODINFO]]
|  {98109E25-64E2-4C95-8A77-414916F5BCEB}
|  0x00004400
|  0x00004400
|  0x003FBC00
|  0x003FBC00
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|  "CAL0" raw partition containing set:cal data. The official name for this partition is "CalibrationBinary".
|  "CAL0" raw partition containing set:cal data. The official name for this partition is "CalibrationBinary".
|-
|-
|  [[Calibration|PRODINFOF]]
|  [[Calibration#CalibrationFile|PRODINFOF]]
|  {F3056AEC-5449-494C-9F2C-5FDCB75B6E6E}
|  0x00400000
|  0x00400000
|  0x00400000
|  0x00400000
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|-
|-
|  BCPKG2-1-Normal-Main
|  BCPKG2-1-Normal-Main
|  {5365DE36-911B-4BB4-8FF9-AA1EBCD73990}
|  0x00800000
|  0x00800000
|  0x00800000
|  0x00800000
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|-
|-
|  BCPKG2-2-Normal-Sub
|  BCPKG2-2-Normal-Sub
|  {8455717B-BD2B-4162-8454-91695218FC38}
|  0x01000000
|  0x01000000
|  0x00800000
|  0x00800000
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|-
|-
|  BCPKG2-3-SafeMode-Main
|  BCPKG2-3-SafeMode-Main
|  {8ED6C9A6-9C48-490B-BBEB-001D17A4C0F7}
|  0x01800000
|  0x01800000
|  0x00800000
|  0x00800000
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|-
|-
|  BCPKG2-4-SafeMode-Sub
|  BCPKG2-4-SafeMode-Sub
|  {5E99751C-56C9-47CC-AA30-B65039888917}
|  0x02000000
|  0x02000000
|  0x00800000
|  0x00800000
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|-
|-
|  BCPKG2-5-Repair-Main
|  BCPKG2-5-Repair-Main
|  {C447D9A2-24B7-468A-98C8-595CD077165A}
|  0x02800000
|  0x02800000
|  0x00800000
|  0x00800000
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|-
|-
|  BCPKG2-6-Repair-Sub
|  BCPKG2-6-Repair-Sub
|  {9586E1A1-3AA2-4C90-91B3-2F4A5195B4D2}
|  0x03000000
|  0x03000000
|  0x00800000
|  0x00800000
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|-
|-
|  SAFE
|  SAFE
|  {A44F9F6B-4ED3-441F-A34A-56AAA136BC6A}
|  0x03800000
|  0x03800000
|  0x04000000
|  0x04000000
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|-
|-
|  SYSTEM
|  SYSTEM
|  {ACB0CDF0-4F72-432D-AA0D-5388C733B224}
|  0x07800000  
|  0x07800000  
|  0xA0000000
|  0xA0000000
|  31 and 32
|  31, 32 and 33
|  Yes (Bis key 2)
|  Yes (Bis key 2)
|  FAT32 filesystem. The official name for this partition is "SystemProperEncryption".
|  FAT32 filesystem. The official names for these partitions are "System", "SystemProperEncryption" and "SystemProperPartition".
|-
|-
|  USER
|  USER
|  {2B777F63-E842-47AF-94C4-25A7F18B2280}
|  0xA7800000
|  0xA7800000
|  0x680000000
|  0x680000000
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|  FAT32 filesystem.
|  FAT32 filesystem.
|-
|-
|
|  
|  
| 0x747BFFE00
| 0x747BFFE00
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Encrypted partitions use AES-XTS using the same non-standard tweak (tweak[0] = sectorIdx[MSB] .. tweak[15] = sectorIdx[LSB], if using 32bit sectorIdx that means tweak[0]..tweak[11] are 0, with tweak[12]..tweak[15] containing big-endian sectorIdx) as other Nintendo AES-XTS code, initial_sector = 0, and sector size 0x4000. All encrypted partitions use console unique keydata.
Encrypted partitions use AES-XTS using the same non-standard tweak (tweak[0] = sectorIdx[MSB] .. tweak[15] = sectorIdx[LSB], if using 32bit sectorIdx that means tweak[0]..tweak[11] are 0, with tweak[12]..tweak[15] containing big-endian sectorIdx) as other Nintendo AES-XTS code, initial_sector = 0, and sector size 0x4000. All encrypted partitions use console unique keydata.
=== PRODINFOF ===
PRODINFOF
├── Certifications
│  └── WirelessCertification.png
└── ptd
    ├── DeviceIdWithEmsBit.dat
    ├── Ecid.dat
    ├── prodCode.dat
    └── log
        ├── Process_asm1.log
        ├── Process_board1.log
        ├── TestFlagLine.log
        ├── TestFlagQc.log
        ├── AGING
        │  └── Sequence.log
        ├── BOARD_TEST
        │  └── Sequence.log
        ├── BOARD_WIRELESS
        │  └── Sequence.log
        ├── FINAL_CHECK
        │  └── Sequence.log
        ├── LCD_AND_KEY
        │  └── Sequence.log
        └── USB_AND_HP
            └── Sequence.log
==== DeviceIdWithEmsBit.dat ====
Contains a 0x10-byte uppercase hex string, identical to the DeviceId in the [[Settings_services|DeviceCert]].


=== SYSTEM ===
=== SYSTEM ===
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On a v2.1 system with MountBis, the only thing under here is "PRF2SAFE.RCV".
On a v2.1 system with MountBis, the only thing under here is "PRF2SAFE.RCV".


= System Savegames =
== SystemSaveData ==
 
See [[SystemSaveData]].
This is a listing of known System Savedata and what titles they correspond to.
 
{| class="wikitable" border="1"
! SaveID || Owner || Mount || Notes
|-
| 0x8000000000000000 || fs || <nowiki>saveDataIxrDb:/</nowiki>, <nowiki>saveDataIxrDbSf:/</nowiki>, <nowiki>saveDataIxrDbPr:/</nowiki>, <nowiki>saveDataIxrDbSd:/</nowiki> || Contains [[IMKV|imkvdb.arc]] and "lastPublishedId".
|-
| 0x8000000000000010 || account || <nowiki>account:/</nowiki> || Account database.
|-
| 0x8000000000000011 || account || <nowiki>idgen:/</nowiki> ||
|-
| 0x8000000000000020 || nfc || <nowiki>data:/</nowiki> || NFC data and backups.
|-
| 0x8000000000000030 || ns || <nowiki>mii:/</nowiki> || Mii database.
|-
| 0x8000000000000031 || ns || <nowiki>mii:/</nowiki> || Mii test mode database.
|-
| 0x8000000000000040 || ns || <nowiki>apprecdb:/</nowiki> ||
|-
| 0x8000000000000041 || ns || <nowiki>nsaccache:/</nowiki> || Home menu icondata/lru list for recently played games.
|-
| 0x8000000000000043 || ns || <nowiki>ns_appman:/</nowiki> ||
|-
| 0x8000000000000044 || ns || <nowiki>ns_sysup:/</nowiki> || Content update context.
|-
| 0x8000000000000045 || ns || <nowiki>vmdb:/</nowiki> || Version List/Required Version List storage.
|-
| 0x8000000000000046 || ns || <nowiki>dtlman:/</nowiki> ||
|-
| 0x8000000000000047 || ns || <nowiki>ns_exfat:/</nowiki> ||
|-
| 0x8000000000000048 || ns || <nowiki>ns_systemseed:/</nowiki> ||
|-
| 0x8000000000000049 || ns || <nowiki>ns_ssversion:/</nowiki> || Safe System version.
|-
| 0x8000000000000050 || settings || <nowiki>SystemSettings:/</nowiki> ||
|-
| 0x8000000000000051 || settings || <nowiki>FwdbgSettingsS:/</nowiki> ||
|-
| 0x8000000000000052 || settings || <nowiki>PrivateSettings:/</nowiki> ||
|-
| 0x8000000000000053 || settings || <nowiki>DeviceSettings:/</nowiki> ||
|-
| 0x8000000000000054 || settings || <nowiki>ApplnSettings:/</nowiki> ||
|-
| 0x8000000000000060 || ssl || <nowiki>SslSave:/</nowiki> ||
|-
| 0x8000000000000070 || nim || <nowiki>nim_sys:/</nowiki> ||
|-
| 0x8000000000000071 || nim || <nowiki>nim_net:/</nowiki> ||
|-
| 0x8000000000000072 || nim || <nowiki>nim_tmp:/</nowiki> ||
|-
| 0x8000000000000073 || nim || <nowiki>nim_dac:/</nowiki> ||
|-
| 0x8000000000000074 || nim || <nowiki>nim_delta:/</nowiki> ||
|-
| 0x8000000000000075 || nim || <nowiki>nim_vac:/</nowiki> ||
|-
| 0x8000000000000076 || nim || <nowiki>nim_local:/</nowiki> ||
|-
| 0x8000000000000077 || nim || <nowiki>nim_lsys:/</nowiki> ||
|-
| 0x8000000000000078 || nim || <nowiki>nim_eca_dbg:/</nowiki> ||
|-
| 0x8000000000000080 || friends || <nowiki>friends:/</nowiki> ||
|-
| 0x8000000000000081 || friends || <nowiki>friends-sys:/</nowiki> ||
|-
| 0x8000000000000082 || friends || <nowiki>friends-image:/</nowiki> ||
|-
| 0x8000000000000090 || bcat || <nowiki>news:/</nowiki> || Actual news msgpack archives.
|-
| 0x8000000000000091 || bcat || <nowiki>news-sys:/</nowiki> || News metadata, tasklist, history, database, required system version, etc.
|-
| 0x8000000000000092 || bcat || <nowiki>news-dl:/</nowiki> || Storage for newly(?) downloaded news list/data.
|-
| 0x80000000000000A0 || bcat || <nowiki>prepo-sys:/</nowiki> || Play Report system information.
|-
| 0x80000000000000A1 || bcat || <nowiki>prepo:/</nowiki> || Play Report msgpack archives.
|-
| 0x80000000000000A2 || bcat || <nowiki>prepo-ap:/</nowiki> ||
|-
| 0x80000000000000B0 || bsdsockets || <nowiki>nsdsave:/</nowiki> || Socket configuration saved data.
|-
| 0x80000000000000C1 || bcat || <nowiki>bcat-sys:/</nowiki> ||
|-
| 0x80000000000000C2 || bcat || <nowiki>bcat-dl:/</nowiki> ||
|-
| 0x80000000000000D1 || erpt || <nowiki>save:/</nowiki> || Contains "/journal" report listing + actual crash reports ("/%08x-%04x-%04x-%02x%02x-%04x%08x"), which are serialized via [http://msgpack.org/ MsgPack].
|-
| 0x80000000000000E0 || es || <nowiki>escertificate:/</nowiki> ||
|-
| 0x80000000000000E1 || es || <nowiki>escommon:/</nowiki> ||
|-
| 0x80000000000000E2 || es || <nowiki>espersonalized:/</nowiki> ||
|-
| 0x80000000000000E3 || es || <nowiki>esmetarecord:/</nowiki> ||
|-
| 0x80000000000000E4 || es || <nowiki>eselicense:/</nowiki> ||
|-
| 0x80000000000000F0 || ns || <nowiki>pdm:/</nowiki> || Play Data log.
|-
| 0x8000000000000100 || pctl || <nowiki>pctlss:/</nowiki> || Parental Control settings.
|-
| 0x8000000000000110 || npns || <nowiki>npns_save:/</nowiki> || Push notifications persistent storage.
|-
| 0x8000000000000120 || ncm || ? || meta/[[IMKV|imkvdb.arc]] for system partition. Cache of data extracted from the [[NCA|.cnmt]] for installed titles?(Including 816)
|-
| 0x8000000000000121 || ncm || ? || meta/[[IMKV|imkvdb.arc]] for sd partition. In some cases this save only contains a "meta/" directory without any file.
|-
| 0x8000000000000122 || || ||
|-
| 0x8000000000001010 || || || Contains "savedata.dat".
|-
| 0x8000000000001040 || || ||
|-
| 0x8000000000001050 || || || Contains "database.dat". Possibly Mii data and Mii texture data?
|-
| 0x8000000000001060 || || ||
|-
| 0x8000000000001070 || || ||
|-
| 0x80000000000010B0 || || || Contains "savedata.dat".
|-
| 0x0000000000000001 || || ||
|-
| 0x0000000000000003 || || ||
|-
| 0x0000000000000004 || || ||
|-
| 0x0000000000000005 || || ||
|-
| 0x0000000000000006 || || ||
|-
| 0x0000000000000007 || || ||
|-
| 0x0000000000000008 || || ||
|-
| 0x0000000000000009 || || ||
|-
| 0x000000000000000A || || ||
|-
| 0x000000000000000C || || ||
|-
| 0x000000000000000D || || ||
|-
| 0x000000000000000F || || ||
|-
| 0x0000000000000010 || || ||
|}
Retrieved from "https://switchbrew.org/wiki/Flash_Filesystem"