Persistent storage

Where can I store files for persistent storage on the SD card?

E.g. I want to keep downloads as persistent files.

Volumio has expanded to the whole SD card via overlay FS. Is there a directory or way to carve some space out for persistent storage such that an upgrade or delete user data will no wipe these files.


The micro SD card appears as an SMB share “Internal Storage”, you can copy files to it over the network from another computer.

Thanks albeit a solution, that’s not really what I was looking for.

I’d prefer to reduce the /dev/mmcblk0p3 partition from expanding to the whole drive and the overlay FS.

Then to create an independent /dev/mmcblk0p4 partition.

How does the overlay FS map to /dev/mmcblk0p3 which config is it defined in?