Just got my microsd, decided to format it to btrfs for easy compatability (did it with ubuntu linux, don't know if it could have been formatted with Jolla). Then I formed a symlink for easy file transfer.

To everyone trying to create a symbolic link for sdcard: don't go to dev-mode (devel-su) or the link won't be created in home/nemo, which means the sdcard won't show when the device is connected to computer. For command-line beginners like me it isn't so clear at first