Originally Posted by brotherswing
Wait a second,.....(House moment)...it's not the card. It's something locking access to the device, not a write failure. Try clearing up the 2nd partition, followed by wiping link2sd's cache. After that try recreating the mount scripts.
in terminal or adb shell,
umount -l /dev/block/vold/179:2
to free the partition access ( the -l means "lazy" unmount)
then recreate the script.