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This page describes the format and encryption of extdata, "extra data" stored on [[SD_Filesystem|SD card]] and [[Flash_Filesystem|NAND]].
This page describes the format and encryption of extdata, "extra data" stored on [[SD_Filesystem|SD card]] and [[Flash_Filesystem|NAND]].
At /Nintendo 3DS/<SomeID>/<SomeID>/extdata/<ExtdataID-High> on SD is directories for each title.(ExtdataID-High is always 00000000) Some titles can have Quota.dat stored in these directories. The directory-name for these directories is the ExtdataID-Low. Then there's a sub-directory 00000000, which contains the actual extdata. Size and number of files in this dir varies per title.
At:
* nand/extdata/<ExtdataID-High>
* sdmc/Nintendo 3DS/<ID0>/<ID1>/extdata/<ExtdataID-High>
(ExtdataID-High is always 00000000) Some titles can have Quota.dat stored in these directories. The directory-name for these directories is the ExtdataID-Low. Then there's a sub-directory 00000000, which contains the actual extdata. Size and number of files in this dir varies per title.
NAND stores the shared extdata and is structured exactly the same way, see [[Flash Filesystem]].
NAND stores the shared extdata and is structured exactly the same way, see [[Flash Filesystem]].