9.3 Setting File System Expansion
9.3.1 Meaning
This means that when there is space in the SD card that is not used by the system yet, it converts the space into a usable space.
SD card storage is treated differently depending on how the operating system is installed. When the operating system installation image is moved to the SD card, only the space corresponding to the partition occupied by the operating system is available, and the remaining space is not used yet. In this case, if the system needs additional space, it is possible to convert unused space into usable space. When installing the system using the utility, the entire space of the SD card is already available so no special expansion work is required.