optional exFAT partition #1830
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optional exFAT partition #1830
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many users request a partition, that is also accessible on operating system, that does not natively support ext4 system, to be able transfer their game files to the storage device (see libretro#646). by reducing the size of the ext4 partition (which mostly stores configuration and setting files) to roughly 2GiB, the remaining space of the storage device can be used as exFAT partition, which is accessible on most (if not all) operating systems. the partition is mounted by udevil to /storage/roms/EXFAT. if for some reason the size of the first (FAT32) partition will be increased in the future, then also the value (4GiB) for the end of the ext4 partition needs to be adjusted. this does not break existing installations of Lakka, but it also does not add the partition to existing installation of Lakka. the partition is created only on the first boot of the freshly flashed image.
the exFAT partition will be created only in case the user adds a file called `create_exfat` in the root of the first (FAT32) partition. so the original (no exFAT partition) behavior is default.
to avoid any folder remapping needs in RetroArch, user can create folder called `bios` in the root of the exFAT partition and place their bios files into this folder. during RetroArch startup this folder will be checked for any existing files/folder, copy them to the default location for system folder and back them up in folder `bios_copied` folder on the exFAT partition. a transfer log is created during this process to check for any failures.
for some users it might be challenging creating a blank file without an extension. this file can be renamed to 'create_exfat' after writing the image / BEFORE first boot, in order to create also an additional exFAT partition
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based on feature request #646