I inserted my SDXC media card into a card reader, camera or other device and the card was not recognised or I was prompted to reformat the card. Why?
SDXC cards are only supported in SDXC Host devices.
To confirm your device supports SDXC media, please refer to your User's Guide.
The picture below is used by the SD Card Association to help illustrate compatibility.
- SDXC memory cards can be used only with SDXC host products.
- SDXC host products can use SD, SDHC and SDXC memory cards.
- SDHC memory cards can be used with SDHC and SDXC host products.
- SDHC host products can use both SD and SDHC memory cards.
SDXC host products are backwards compatible with earlier SD and SDHC memory cards.
SDXC memory cards should not be used in non-compatible host products.
If you need to format an SDXC card, you can format it by using SDXC host products or SD Formatter 3.0.
If an SDXC memory card is inserted into a PC or a host product that does not support SDXC memory cards, a message may prompt you to format the card.
Attention:
Never format the SDXC memory card in a non-compatible host product!
Not only will this erase the data on the SDXC memory card, but it will also format the card with a File System that is incompatible with SDXC host products.
Source: SDA
FAQ: KFC-012611-SDHC-01