(in the sample image below, we right-clicked on H:). WARNING: Backup all your data before formatting. Formatting will erase all data on the memory device.ġ. Double-click My Computer, or Computer (for Vista and Win7)Ģ. Right-click the drive letter associated with your memory device, then select Format If re-formatting is needed, follow the steps below. Reformatting may clear file system corruption and quickly erase everything on the device. Memory cards are formatted with the following standards: SD/microSD NOTE: All SanDisk memory cards and flash drives come pre-formatted and do not need to be formatted out of the box.