Homebrew Restoring saves from older emuMMC backup?

[BEnh3N]

I have a backup of the entire filesystem of an old sd card I used for my switch that I do not have anymore. When I got a new sd card to re-hack my switch, I realised that some of my newer saves hadn't been kept and I have a suspicion that they may have been saved in emuNAND? I don't really know too much about how this kind of data is stored or if there even is any save data stored here, but I thought it was worth a shot. For reference, the emuMMC folder on my sd backup contained a RAW1 directory and an emummc.ini file. From my knowledge, the game saves would be stored somewhere in the emuMMC/RAW1/Nintendo/save directory but I have no knowledge about how to extract them, or if that is even possible at all.

 

[thesjaakspoiler]

That should be no problem.
Savegames are stored by title id so that needs some looking up.

There is a tutorial on the whole process :
https://gbatemp.net/threads/how-to-extract-savegames-from-nand-dump-for-checkpoint.550343/

 

[BEnh3N]

When following this tutorial, I got stuck actually getting the titleids for each of the save files. When running each command, I would get the error Savedata header is not valid. I had seen on a previous post that this could mean my files have been corrupted in some way, as they don't have the correct string of letters in the header. This may have been changed since the post was made in 2019, and the files do seem to have some common data in the headers.

Can't post the link to the files right now because of the age of my account but I do have some screenshots of the starting data of each of the files.

 

[Nephiel]

Saves are stored in the emuMMC, not the Nintendo/save folder. The presence of a RAW1 folder means that SD card was using a partition-based emuMMC. To recover the saves, you will need a dump of that partition.

Unfortunately, if you only copied the files off the original SD card, chances are the emuMMC partition was not included among them.

 

[BEnh3N]

Saves are stored in the emuMMC, not the Nintendo/save folder. The presence of a RAW1 folder means that SD card was using a partition-based emuMMC. To recover the saves, you will need a dump of that partition.

Unfortunately, if you only copied the files off the original SD card, chances are the emuMMC partition was not included among them.

Ah I see, thank you for the response! I had hoped this wasn’t the case, but I guess I have an excuse to play totk again…

Now I’m curious as to what these files actually have in them, since similar files are also in the normal Nintendo folder of my switch. I know saves are stored in the internal ssd, so what exactly is stored here?