Problems with specific media (SD card or USB memory)

This question comes often so I want to detail it here. This applies to all our products.

Our devices have been tested to work with hundreds (maybe thousands) of media devices (SD cards and USB thumb drive), by us and our customers. In very rare cases, there are cases where a specific media may not function well, like it fails to mount. GHI doesn't have a list of media that 100% work because all cards must work and 99% do work fine. If you run into a media that is not working as expected then let us know and we may ask you to ship us your card to see why it didn't work, and so optimize our driver for it.

One important thing to have in your code is to try to mount the media (especially SD cards) through 3 trials. In the past, we had these 3 trials hidden in our code but this caused internal problems. It is best to try to mount the card again if the mounting fails.

Now, some rare media do not work properly because of the media manufacture didn't stick to the specification defined for the media they are manufacturing. What we do in these cases is that we try to add additional handler in our driver to handle those "bad" cards.

Test the storage media in a simple consistent manner, several reported problems were caused by software bugs in the user managed application.

Please start your question in new thread instead of replying to this post