SanDisk® Global Customer Support (US)

How do I format a Memory Card or Flash Drive on an Android Device

All SanDisk memory cards and flash drives come pre-formatted and do not need to be formatted out of the box.
Reformatting will clear file system corruption or quickly erase everything on the device. If re-formatting is needed, follow the steps below.

WARNING:  Backup all your data before formatting. Formatting will erase all data on the memory device.

Formatting your memory device:

1.     Access the settings menu of your device

2.     Access the Storage menu

3.     Select Format SD™ card or Format USB OTG Storage

4.     Select Format

5.     Select Delete All



Note: Implementation of the format function may differ between devices please refer to your device manufacturer for more information.