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. See System Startup > Replacing the System Startup. |
| /log/ | Full flight logs |
| /mission_log/ | Reduced flight logs |
| /fw/ | DroneCAN firmware |
| /uavcan.db/ | DroneCAN DNA server DB + logs |
| /params | Parameters (if not in FRAM/FLASH) |
| /dataman | Mission storage file |
| /fault_<datetime>.txt | Hardfault files |
| /bootlog.txt | Boot log file |
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