set an SD card as default storage on Android devices; for instance, the system reformats the card to a suitable file format (FAT32, ext4, or exFAT).
The three most prevalent file formats for USB drives include FAT32, exFAT, and NTFS. There are alternative formats, such as APFS for macOS and ext4 for Linux, but our focus will be on the main three. Each of these formats presents its own benefits and limitations, and the choice you make will depend on your storage requirements. We will cover how to select the appropriate one for your circumstances shortly, but first, it’s essential to understand that you generally have the option to change your choice later if needed.