Why SD Flash memory cards are not being detected by some operating systems?
Card readers built into some systems do not support higher capacity cards (e.g., 1GB to 32GB). Many systems, including newer ones with built in card readers, are made to support cards up to a limited capacity. The capacity of your card may exceed this limitation and a firmware upgrade from the computer manufacturer may be necessary. Check with your computer manufacturer for hardware/software fixes. If you have a digital camera, PDA, portable media player or an external card reader that you know supports 2GB cards, try connecting one of these devices to the computer. If you can successfully view the card via the external device, the problem may exist with your built in reader. If you have a SDHC (Secure Digital High Capacity) card, it is possible that the internal card reader on your computer does not support this technology. Although SDHC cards look identical to standard SD (Secure Digital) cards, SDHC cards are not backwards compatible with standard SD format host devices. Standard SD
