So I just rooted my Concord II, and installed Link2SD. I partitioned my SD card with MiniTool, and made a Fat32 and a ext2, both primary. But when after opening Link2SD and giving it root access, it gives me a popup saying select the file system of your SD card's second partition (see first screenshot below), and I select ext2 and press ok. But then a mount script error popup comes up saying mount script could not be created (see second screenshot). The error is "mount: Operation not supported on transparent endpoint". How can I fix this? These screenshots illustrate what's happening:
Try with an ext4 partition.
From www.link2sd.info/faq. I had the same issue and this fixed it.