Editing Getting Started (section)

=== Using Your SD Card as External Storage ===

If you would prefer to use your micro SD card in card readers and other devices, and don't want to install many Android apps to your RP2, you will probably want to keep the card as external storage. Additionally, if you want to use RetroidOS, you cannot use a card formatted as internal storage; while your RP2 will still appear to boot normally into RetroidOS, you will not be able to access or install any games.

To use RetroidOS with a new micro SD card, you will need to copy the files from your original 32GB card over to the new card. These files include encryption keys and support files that will allow RetroidOS to read stored games, to install new games from local files, and to access the Retroid "online store".

Some guides recommend using partition management software (e.g. MiniTool, Disk Genius) to make a complete backup of the partition on the included 32GB micro SD card, and then write this backup to your new micro SD card. If you are comfortable working with partitions and drive images, this can work very well. However, it doesn't appear to offer any advantages over simply formatting your new micro SD card to "exFAT" and then copying all the files over normally. Furthermore, if you make a mistake during the partition copying process, it is possible to introduce errors into your micro SD cards which would require more work to repair.