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Reformat an SD Card for a New Android Device

You can鈥檛 reformat an encrypted SD card from an old Android device on a new one (if you just want the extra space, and don鈥檛 need to recover the contents because you have them elsewhere). It just won鈥檛 even offer. You can mount/unmount, decrypt (except you can鈥檛), and that鈥檚 about it. (Unless this is a Samsung Special removed-the-UI-from-settings thing.)

But you can plug it into a PC and reformat it there, then put it in the new device and encrypt your new, empty extra storage space.