This is an add-on section for formatting an SD card to work with the 3DS.
If the 3DS already recognizes the SD card, this guide is not required.
This page is for Windows users only. If you are not on Windows, check out the [Formatting SD (Linux)](formatting-sd-(linux)) or [Formatting SD (Mac)](formatting-sd-(mac)) pages.
* **For SD cards 32GB or smaller:** the latest version of [SD Formatter](https://www.sdcard.org/downloads/formatter/sd-memory-card-formatter-for-windows-download/)
* **For SD cards 64GB or larger:** The latest version of [guiformat](http://ridgecrop.co.uk/index.htm?guiformat.htm)
+ Your SD card write-protection switch may be [enabled](/images/sdlock.png). The lock must be flipped upwards to allow writing to the SD card (including formatting).
+ Your SD card may be partitioned or have unallocated space. Follow the instructions [here](https://wiki.hacks.guide/wiki/SD_Clean/Windows) to reformat your SD card.