PX4 SD Card Layout

The PX4 SD Card is used for storing configuration files, flight logs, mission information etc.

TIP

The SD card should be FAT32 formatted for use with PX4 (this is the default for SD cards). We recommend that you reformat cards that are using a different file system.

The directory structure/layout is shown below.

Directory/File(s)	Description
/etc/	Extra config (+ mixers). See System Startup > Replacing the System Startup.
/etc/mixers/	Mixers
/log/	Full flight logs
/mission_log/	Reduced flight logs
/fw/	UAVCAN firmware
/uavcan.db/	UAVCAN DB + logs
/params	Parameters (if not in FRAM/FLASH)
/dataman	Mission storage file
/fault_<datetime>.txt	Hardfault files
/bootlog.txt	Boot log file