SD Filesystem: Difference between revisions

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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/<[[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/<[[Capture_services#AlbumFileDateTime|DateTime string]]>-<ID string>.mp4".
 
"<title-specific hex ID string>" is the same for both screenshots and "Extra".


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


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


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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}