Astell&Kern on X: "We recommend formatting all memory cards as FAT32 for best results. FAT32 supports up to 2TB SD and microSD cards. Did you know you can format your memory card
Fixed 2023】How to Clear an SD Card on Android/Camera/Windows/MAC?
SD Card Eraser Tool: Securely Wipe SD card in Windows PC & Server
4 Steps]Format SD Card without Losing Data for Phone Windows