I am unsure as to whether to ask here, or on software recommendations.
I have a box full of micro SD cards, which I have used over the years for Raspberry Pis. I was searching through them for one to use, and most seemed to be unrecognized.
I am not even sure how an SD card can go wrong, let alone 6 or 8 from a box of 10. Of course, it is possible that I recognized them as defective, but kept them "just in case".
Should I just through them away, or is there any way to rescue them?
Please note that I am not concerned with their current contents.