My 4GB PNY Optima sd card will not read
I got a PNY Optima sd card. I can put it in my reader but it will not read it. I can put other sd cards in and it will read them fine.
Electronics - Others - PNY - 4GB Secure Digital High Capacity Memory Card
Answers & Comments
Try the 4GB card in some other reader, or your camera, to confirm that it does work.
It's possible that your card-reader will not support anything over 2GB.
SD cards are not created equally! There is so much more to know than just the capacity.
There are many things about SD cards most people are not aware of. After having numerous problems with my cards, I thought I would share what I learned, mostly from online articles, trial and error!
There are SD cards (Secure Digital)
SDHC cards (SD high capacity)
and SDXC cards (SD extra high capacity, high performance)
Speed Class: There may be a C with a number inside the C printed on the card, (or a U with a 1 in it) - if there is no C or U on your card, it is a C2 card.
C2 is for basic target="_blank">https://www.sdcard.org/consumers/speed/speed_class/
Your device will read SD cards up to the capacity it is capable of. A device with SDHC capability will be able to read basic SD cards, but might not be able to read an SDXC card, so you may think you have a defective card when you actually just have a device that does not have the capability to read it.
If your computer's SD reader or peripheral card reading device has an SD card reader and it cannot read SDHC (high capacity) or SDXC (extra high performance/capacity) it will reject or not see the card and you might think you have a defective card. Put the card in your camera or other device you are going to use it for, and then using the USB cord that came with the device, plug that into your PC. The PC will be able to read the card that way, edit it, etc.
After copying all files on the SD card to your computer, you may wish to format the card before using it again. When formatting the card, IMPORTANT: Make sure you have copied all the target="_blank">http://pvillecomp.com/
There is an SD website that offers a download for proper formatting of your SD card, with downloadable instructions. I was using Windows to format my SD cards, but the SD website recommends using software that specifically formats SD cards. Here is the site: www.SDcard.org. Click the Downloads section.
Some older devices can only handle smaller SD cards (2 GB or smaller), so if your device cannot read a particular SD card...check your owner's manual. There is usually a limit to the size, capacity, speed, type, etc. of the cards each device can handle.
It is also possible to partition an SD card so it can be read by more devices, or separated for organization purposes. I prefer smaller SD cards when possible to avoid a huge loss if the card becomes damaged, lost, etc., but for those who have cards that are 16+ GB in size they may want to partition them. Here is a website for that:
http://forum.xda-developers.com/showthread.php?t=267475
Hope this helps!