SD Filesystem - Revision history

Yellows8 at 23:41, 6 June 2025

2025-06-06T21:41:40Z

← Older revision		Revision as of 01:41, 7 June 2025
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	└── save		└── save

	All files stored under the Contents sub-directories and save/ use the [[NAX0]] format.		All files stored under the Contents sub-directories and save/ use the [[NAX0]] format ([S2] NAX1).

			The only other difference with SD-layout on Switch 2 besides NAX1, is the content directories are now "<lower-case hex Nca directory>.nca.CONCAT".

	== Album ==		== Album ==

Hexkyz: /* Contents */

2020-03-17T18:03:59Z

Contents

← Older revision		Revision as of 21:03, 17 March 2020
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	Also contains file "private", which stores the 0x10 [[Filesystem_services#SetSdCardEncryptionSeed\|sd card seed verification vector]].		Also contains file "private", which stores the 0x10 [[Filesystem_services#SetSdCardEncryptionSeed\|sd card seed verification vector]].

	===placehld and registered ===		[4.0.0+] Also contains file "private1", which stores 0x20 bytes with the last 0x10 being random.

			=== placehld and registered ===
	"placehld" and "registered" store game contents; contents are initially downloaded temporarily into the "placehld" folder, and then [[NCM_services#IContentStorage\|moved into the registered folder]] when downloading is complete.		"placehld" and "registered" store game contents; contents are initially downloaded temporarily into the "placehld" folder, and then [[NCM_services#IContentStorage\|moved into the registered folder]] when downloading is complete.

Yellows8: /* Album */

2019-08-31T13:54:12Z

Album

← Older revision		Revision as of 17:54, 31 August 2019
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	== Album ==		== Album ==
	Contains the screenshots: "YYYY/MM/DD/<DateTime string>-<title-specific hex ID string>.jpg". These are [[Capture_services#Notes\|MAC]]'d, contents with an invalid MAC will display an error on view.		Contains the screenshots: "YYYY/MM/DD/<[[Capture_services#AlbumFileDateTime\|DateTime string]]>-<title-specific hex ID string>.jpg". These are [[Capture_services#Notes\|MAC]]'d, contents with an invalid MAC will display an error on view.

	When an Application recorded video via [[Applet_Manager_services#CreateMovieMaker\|MovieMaker]], the "Extra" sub-directory contains the recorded Application videos: "/Extra/<title-specific hex ID string>/YYYY/MM/DD/<DateTime string>-<ID string>.mp4".		When an Application recorded video via [[Applet_Manager_services#CreateMovieMaker\|MovieMaker]], the "Extra" sub-directory contains the recorded Application videos: "/Extra/<title-specific hex ID string>/YYYY/MM/DD/<[[Capture_services#AlbumFileDateTime\|DateTime string]]>-<ID string>.mp4".

	"<title-specific hex ID string>" is the same for both screenshots and "Extra".		"<title-specific hex ID string>" is the same for both screenshots and "Extra".

Yellows8: /* Album */

2019-08-31T01:50:15Z

Album

← Older revision		Revision as of 05:50, 31 August 2019
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	== Album ==		== Album ==
	Contains the screenshots: "YYYY/MM/DD/<hex>.jpg". These are [[Capture_services#Notes\|MAC]]'d, contents with an invalid MAC will display an error on view.		Contains the screenshots: "YYYY/MM/DD/<DateTime string>-<title-specific hex ID string>.jpg". These are [[Capture_services#Notes\|MAC]]'d, contents with an invalid MAC will display an error on view.

			When an Application recorded video via [[Applet_Manager_services#CreateMovieMaker\|MovieMaker]], the "Extra" sub-directory contains the recorded Application videos: "/Extra/<title-specific hex ID string>/YYYY/MM/DD/<DateTime string>-<ID string>.mp4".

			"<title-specific hex ID string>" is the same for both screenshots and "Extra".

	== save ==		== save ==

Yellows8: /* Contents */

2018-12-31T23:29:48Z

Contents

← Older revision		Revision as of 02:29, 1 January 2019
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	== Contents ==		== Contents ==
	~~It seems this directory~~ didn't exist until [[2.0.0]].		Contains directories "placehld" and "registered", which didn't exist until [[2.0.0]].

	~~Contains directories "placehld" and "registered"~~.

	Also contains file "private", which stores the 0x10 [[Filesystem_services#SetSdCardEncryptionSeed\|sd card seed verification vector]].		Also contains file "private", which stores the 0x10 [[Filesystem_services#SetSdCardEncryptionSeed\|sd card seed verification vector]].

SocraticBliss: /* placehld and registered */

2018-05-19T22:42:03Z

placehld and registered

← Older revision		Revision as of 02:42, 20 May 2018
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	No titleIDs are stored in any directories/filenames here.		No titleIDs are stored in any directories/filenames here.

	All hex IDs(below 000000XX and NcaId) used here are unique per title/content. XX is calculated as the first byte from the output of SHA-256(~~NcaId~~).		All hex IDs (shown below as 000000XX and [[NCM_services#NcaID\|NcaId]]) used here are unique per title/content. XX is calculated as the first byte from the output of the binary SHA-256(Nca directory).

	Game contents are stored inside [[NAX0]] archives; due to the 4 GB filesize limit on FAT32, contents that are bigger than 4 GB have additional file contents automatically split into separate files. This automatic file-splitting occurs even on exFAT SD cards where it is not necessary.		Game contents are stored inside [[NAX0]] archives; due to the 4 GB filesize limit on FAT32, contents that are bigger than 4 GB have additional file contents automatically split into separate files. This automatic file-splitting occurs even on exFAT SD cards where it is not necessary.
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	<sub-directory under Contents>		<sub-directory under Contents>
	└── <directories with upper-case hex: 000000XX>		└── <directories with upper-case hex: 000000XX>
	└── <~~lowercase~~ hex ~~[[Content_Manager_services\|NcaId]]~~>.nca		└── <lower-case hex Nca directory>.nca
	└── 00 [[NAX0\|actual file for data storage]]		└── 00 [[NAX0\|actual file for data storage]]
	└── 01 (storage for file data at +4GB in the actual NCA)		└── 01 (storage for file data at +4GB in the actual NCA)
	└── {etc}		└── {etc}

SciresM: wiki editing is hard

2018-02-11T01:46:39Z

wiki editing is hard

← Older revision		Revision as of 04:46, 11 February 2018
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	== Album ==		== Album ==
	Contains the screenshots: "YYYY/MM/DD/<hex>.jpg". These ~~contain some sort of~~ MAC, ~~the system~~ will display an error ~~for screenshots with invalid MACs~~.		Contains the screenshots: "YYYY/MM/DD/<hex>.jpg". These are [[Capture_services#Notes\|MAC]]'d, contents with an invalid MAC will display an error on view.

	== save ==		== save ==
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	Contains directories "placehld" and "registered".		Contains directories "placehld" and "registered".

	Also contains file "private", which stores the 0x10 [[Filesystem_services\|#SetSdCardEncryptionSeed\|sd card seed verification vector]].		Also contains file "private", which stores the 0x10 [[Filesystem_services#SetSdCardEncryptionSeed\|sd card seed verification vector]].

	===placehld and registered ===		===placehld and registered ===

SciresM: /* save */

2018-02-11T01:45:05Z

save

← Older revision		Revision as of 04:45, 11 February 2018
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	== save ==		== save ==
	Contains system-only savedata "8000000000000000" and "8000000000000124".		Contains system-only savedata "8000000000000000" and "8000000000000124".

			8000000000000000 is a [[Filesystem_services\|FS module]] save describing the other system savedata on the SD card (normally only 8000000000000124).

			8000000000000124 is the [[NCM_services\|NCM module]] save describing what contents are installed to the SD card.

	== Contents ==		== Contents ==

SciresM: .

2018-02-11T01:43:48Z

← Older revision		Revision as of 04:43, 11 February 2018
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	Contains directories "placehld" and "registered".		Contains directories "placehld" and "registered".

	Also contains file "private"~~. Modifying this file results in~~ the ~~system throwing the <this microSD is for another system> error~~.		Also contains file "private", which stores the 0x10 [[Filesystem_services\|#SetSdCardEncryptionSeed\|sd card seed verification vector]].

	===placehld and registered ===		===placehld and registered ===
	"placehld" and "registered" are the ~~same, except that the former stores the temp data during eShop title download, while the latter is for the final title data. The contents of the former for a title(~~"placehld~~/<hex>/~~"~~) are~~ moved into the ~~latter~~ when ~~title download finishes~~.		"placehld" and "registered" store game contents; contents are initially downloaded temporarily into the "placehld" folder, and then [[NCM_services#IContentStorage\|moved into the registered folder]] when downloading is complete.

	Some of the "placehld/<hex>" directories are temp-only and don't get moved into "registered"~~. These are deleted when the title is launched(?), at that point the directories are already empty~~.		Some of the "placehld/<hex>" directories are temp-only and don't get moved into "registered".

	No titleIDs are stored in any directories/filenames here.		No titleIDs are stored in any directories/filenames here.

	All hex IDs(below ~~XXXXXXXX~~ and NcaId) used here are unique per title/content~~, these are~~ the ~~same for different systems for~~ the ~~same title~~(s).		All hex IDs(below 000000XX and NcaId) used here are unique per title/content. XX is calculated as the first byte from the output of SHA-256(NcaId).

			Game contents are stored inside [[NAX0]] archives; due to the 4 GB filesize limit on FAT32, contents that are bigger than 4 GB have additional file contents automatically split into separate files. This automatic file-splitting occurs even on exFAT SD cards where it is not necessary.

	<sub-directory under Contents>		<sub-directory under Contents>
	└── <directories with upper-case hex: ~~XXXXXXXX~~>		└── <directories with upper-case hex: 000000XX>
	└── <lowercase hex [[Content_Manager_services\|NcaId]]>.nca		└── <lowercase hex [[Content_Manager_services\|NcaId]]>.nca
	└── 00 ~~(Actual~~ file for data storage)		└── 00 [[NAX0\|actual file for data storage]]
			└── 01 (storage for file data at +4GB in the actual NCA)
			└── {etc}

Yellows8: /* Contents */

2017-09-05T23:38:45Z

Contents

← Older revision		Revision as of 03:38, 6 September 2017
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	== Contents ==		== Contents ==
			It seems this directory didn't exist until [[2.0.0]].

	Contains directories "placehld" and "registered".		Contains directories "placehld" and "registered".