fix-sd-card-issues If you get an “IO error” or an “Unable to Write to SD Card” error, then chances are you are using an SD Adapter with the write protection on.  If you look on the left top side of your SD Card adapter you will see a switch that you can push up or down.  Make sure you push it the opposite way of whatever it is currently pushed to.  That should ensure that your SD Card will be writable.  If you are having issues with lost SD Card space, you can try the HP USB Format utility to recover lost USB or SD Card space and it works very well.  It saved me when I restored a raw OSX Mountain Lion image onto my SD Card that made my SD Card corrupt.