SD Card Formats


#1

On the Dragonboard there is an micro sd card slot. I would like to use it to save files. I formatted a micro sd card as FAT32 and saving to the card works fine. I would like to know if there is a particular format that is better to use for the micro sd card rather than FAT32. What are the supported formats?
Thanks,
Kimbo


#2

There is nothing worse than fat.
Try ext4.


#3

The only advantage of FAT32 is its wide support/compatibility [1], so if you plan to use your SDCARD on multiple operating systems, this is probably fine. But this is an old file-system (1977) with limitations, 4GB max per file, no journal (prone to corruption), no file permissions…

So I agree with doitright, you should go with ext4 (Linux permission compatibility, better perf & reliatbility…).

[1] https://www.7dayshop.com/blog/operating-systems-and-file-systems-cross-compatibility-windows-apple-linux-playstation-xbox-android/